Editing Kingdom of Jerusalem (section)

== History ==
{{For timeline}}

=== First Crusade and the foundation of the kingdom ===
{{main|First Crusade}}
The First Crusade was preached at the [[Council of Clermont]] in 1095 by [[Pope Urban II]], with the goal of assisting the [[Byzantine Empire]] against the invasions of the "[[Seljuk Turks|Turks]] and Arabs" and "to destroy this vile race from the lands of our friends."<ref>Quote from the speech of Pope Urban II, {{cite web |title=Pope Urban II's Speech Calling for the First Crusade |date=25 September 2013 |url=https://www1.cbn.com/spirituallife/calling-for-the-first-crusade#Robert }}</ref> However, the main objective quickly became the control of the [[Holy Land]]. The Byzantines were frequently at war with the Seljuks and other Turkish dynasties for control of [[Anatolia]] and [[Syria]]. The Sunni Seljuks had formerly ruled the [[Seljuk Empire]], but this empire had collapsed into several smaller states after the death of [[Malik-Shah I]] in 1092. Malik-Shah was succeeded in the Anatolian [[Sultanate of Rum]] by [[Kilij Arslan I]], and in Syria by his brother [[Tutush I]], who died in 1095. Tutush's sons [[Fakhr al-Mulk Radwan]] and [[Duqaq (Seljuk ruler of Damascus)|Duqaq]] inherited [[Aleppo]] and [[Damascus]] respectively, further dividing Syria amongst emirs antagonistic towards each other, as well as [[Kerbogha]], the [[atabeg]] of [[Mosul]]. This disunity among the Anatolian and Syrian emirs allowed the Crusaders to overcome any military opposition they faced on the way to Jerusalem.{{Sfn|Holt|1989|pp=11, 14–15}}

Egypt and much of Palestine were controlled by the [[Fatimid Caliphate]], which had extended further into Syria before the arrival of the Seljuks. Warfare between the Fatimids and Seljuks caused great disruption for the local Christians and for Western pilgrims. The Fatimids, under the nominal rule of [[caliph]] [[al-Musta'li]] but actually controlled by [[vizier]] [[al-Afdal Shahanshah]], had lost Jerusalem to the Seljuks in 1073;{{Sfn|Gil|1997|pp=410, 411 note 61}} they recaptured it in 1098 from the [[Artuqids]], a smaller Turkish tribe associated with the Seljuks, just before the arrival of the crusaders.{{Sfn|Holt|1989|pp=11–14}}

[[File:Godefroi1099.jpg|thumb|left|After the successful siege of Jerusalem in 1099, [[Godfrey of Bouillon]], leader of the First Crusade, became the first ruler of the Kingdom of Jerusalem.]]
The Crusaders arrived at Jerusalem in June 1099; a few of the neighbouring towns ([[Ramla]], [[Lod|Lydda]], [[Bethlehem]], and others) were taken first, and Jerusalem itself [[siege of Jerusalem (1099)|was captured]] on July 15.<ref>The First Crusade is extensively documented in primary and secondary sources. See for example [[Thomas Asbridge]], ''The First Crusade: A New History'' (Oxford: 2004); {{harv|Tyerman|2006}}; [[Jonathan Riley-Smith]], ''The First Crusade and the Idea of Crusading'' (Pennsylvania: 1991); and the lively but outdated [[Steven Runciman]], ''A History of the Crusades: Volume 1, The First Crusade and the Foundation of the Kingdom of Jerusalem'' (Cambridge: 1953).</ref> On 22 July, a council was held in the [[Church of the Holy Sepulchre]] to establish a king for the newly created Kingdom of Jerusalem. [[Raymond IV, Count of Toulouse]] and [[Godfrey of Bouillon]] were recognized as the leaders of the crusade and the siege of Jerusalem. Raymond was the wealthier and more powerful of the two, but at first he refused to become king, perhaps attempting to show his piety and probably hoping that the other nobles would insist upon his election anyway.{{Sfn|Tyerman|2006|pp=159–160}} The more popular Godfrey did not hesitate like Raymond, and accepted the position as leader. Most modern historians chronicle that he took the title ''[[Title of Godfrey of Bouillon|Advocatus Sancti Sepulchri]]'' ("advocate" or "defender" of the Holy Sepulchre). Others report that Godfrey himself seems to have used the more ambiguous term ''princeps'', or simply retained his title of ''dux'' from Lower Lorraine. According to William of Tyre, writing in the later 12th century when Godfrey had become a legendary hero, he refused to wear "a crown of gold" where Christ had worn "a [[crown of thorns]]".<ref>[[William of Tyre]], ''A History of Deeds Done Beyond the Sea'', trans. E.A. Babcock and A.C. Krey, [[Columbia University Press]], 1943, vol. 1, bk. 9, ch. 9.</ref><ref>Riley-Smith (1979), "The Title of Godfrey of Bouillon", ''Bulletin of the Institute of Historical Research'' '''52''', pp. 83–86.</ref><ref>Murray, Alan V. (1990), "The Title of Godfrey of Bouillon as Ruler of Jerusalem", ''Collegium Medievale'' '''3''', pp. 163–178.</ref> Raymond was incensed and took his army to forage away from the city. The new kingdom, and Godfrey's reputation, was secured with the defeat of the Egyptian army under [[al-Afdal Shahanshah]] at the [[Battle of Ascalon]] one month after the conquest, on August 12, but Raymond and Godfrey's continued antagonism prevented the crusaders from taking control of [[Ascalon]] itself.<ref>Asbridge, pg. 326.</ref>

There was still some uncertainty about what to do with the new kingdom. The [[papal legate]] [[Daimbert of Pisa]] convinced Godfrey to hand over Jerusalem to him as [[Latin Patriarch of Jerusalem|Latin patriarch]], with the intention to set up a theocratic state directly under papal control. According to William of Tyre, Godfrey may have supported Daimbert's efforts, and he agreed to take possession of {{qi|one or two other cities and thus enlarge the kingdom}} if Daimbert were permitted to rule Jerusalem.<ref>William of Tyre, vol. 1, bk. 9, ch. 16, pg. 404.</ref> Godfrey did indeed increase the boundaries of the kingdom, by capturing [[Jaffa]], [[Haifa]], [[Tiberias]], and other cities, and reducing many others to tributary status. He set the foundations for the [[Vassals of the Kingdom of Jerusalem|system of vassalage]] in the kingdom, establishing the [[Principality of Galilee]] and the [[County of Jaffa]], but his reign was short, and he died of an illness in 1100. His brother [[Baldwin I of Jerusalem|Baldwin of Boulogne]] successfully outmanoeuvred Daimbert and claimed Jerusalem for himself as "[[King of Jerusalem|King of the Latins of Jerusalem]]". Daimbert compromised by crowning Baldwin I in Bethlehem rather than Jerusalem, but the path for a [[Elective monarchy#Kingdom of Jerusalem|monarchy]] had been laid.{{Sfn|Tyerman|2006|pp=201–202}} Within this framework, a [[Catholic Church|Catholic church]] hierarchy was established, overtop of the local [[Eastern Orthodox Church|Eastern Orthodox]] and [[Syriac Orthodox]] authorities, who retained their own hierarchies (the Catholics considered them schismatics and thus illegitimate, and vice versa). Under the Latin patriarch, there were four suffragan archdioceses and numerous dioceses.{{sfn|Mayer|1988|pages=171–76}}

=== Expansion ===
During [[Baldwin I of Jerusalem|Baldwin I]]'s reign, the kingdom expanded even further. The number of European inhabitants increased, as the minor [[crusade of 1101]] brought reinforcements to the kingdom. Baldwin repopulated Jerusalem with Franks and native Christians, after his expedition [[Oultrejordain|across the Jordan]] in 1115.<ref>William of Tyre, vol. 1, bk. 11, ch. 27, pp. 507–508.</ref> With help from the Italian city-states and other adventurers, notably King [[Sigurd I of Norway]], Baldwin captured the port cities of Acre (1104), [[Beirut]] (1110), and [[Sidon]] (1111), while exerting his [[suzerainty]] over the other [[crusader state]]s to the north – Edessa (which he had founded in 1097 during the crusade), Antioch, and Tripoli, which he helped capture in 1109. He successfully defended against Muslim invasions, from the Fatimids at the numerous [[Battle of Ramla (disambiguation)|battles at Ramla]]<!--leave as link to dab, as this refers to all three battles within five years--> and elsewhere in the southwest of the kingdom, and from [[Damascus]] and [[Mosul]] at the [[Battle of al-Sannabra]] in the northeast in 1113.<ref>[[Thomas F. Madden|Thomas Madden]], ''The New Concise History of the Crusades'' (Rowman and Littlefield, 2005), pp. 40–43.</ref> As [[Thomas F. Madden|Thomas Madden]] says, Baldwin was {{qi|the true founder of the kingdom of Jerusalem}}, who {{qi|had transformed a tenuous arrangement into a solid feudal state. With brilliance and diligence, he established a strong monarchy, conquered the Palestinian coast, reconciled the crusader barons, and built strong frontiers against the kingdom's Muslim neighbours.}}<ref>Madden, pg. 43.</ref>
[[File:Funeral of Baldwin I.jpg|thumb|left|The funeral of [[Baldwin I of Jerusalem|Baldwin I]] from the book ''[[Passages d'outremer|Les Passages d'outremer faits par les Français contre les Turcs depuis Charlemagne jusqu'en 1462]]''.]]
Baldwin brought with him an Armenian wife, traditionally named [[Arda of Armenia|Arda]] (although never named such by contemporaries), whom he had married to gain political support from the Armenian population in Edessa, and whom he quickly set aside when he no longer needed Armenian support in Jerusalem. He bigamously married [[Adelaide del Vasto]], regent of Sicily, in 1113, but was convinced to divorce her as well in 1117; Adelaide's son from her first marriage, [[Roger II of Sicily]], never forgave Jerusalem, and for decades withheld much-needed Sicilian naval support.{{sfn|Mayer|1988|pages=71–72}}

Baldwin died without heirs in 1118, during a campaign against Egypt, and the kingdom was offered to his brother [[Eustace III of Boulogne]], who had accompanied Baldwin and Godfrey on the crusade. Eustace was uninterested, and instead the crown passed to Baldwin's relative, probably a cousin, [[Baldwin II of Jerusalem|Baldwin of Le Bourg]], who had previously succeeded him in Edessa. Baldwin II was an able ruler, and he too successfully defended against Fatimid and Seljuk invasions. Although Antioch was severely weakened after the [[Battle of Ager Sanguinis]] in 1119, and Baldwin himself was held captive by the emir of Aleppo from 1123 to 1124, Baldwin led the crusader states to victory at the [[Battle of Azaz (1125)|Battle of Azaz]] in 1125. His reign saw the establishment of the first [[Military order (society)|military orders]], the [[Knights Hospitaller]] and the [[Knights Templar]]; the earliest surviving written laws of the kingdom, compiled at the [[Council of Nablus]] in 1120; and the first commercial treaty with the [[Republic of Venice]], the {{lang|la|[[Pactum Warmundi]]}}, in 1124. The increase of naval and military support from Venice led to the capture of [[Tyre, Lebanon|Tyre]] that year. The influence of Jerusalem was further extended over Edessa and Antioch, where Baldwin II acted as regent when their own leaders were killed in battle, although there were regency governments in Jerusalem as well during Baldwin's captivity.{{sfn|Mayer|1988|pages=72–77}} Baldwin was married to the Armenian noblewoman [[Morphia of Melitene]], and had four daughters: [[Hodierna of Tripoli|Hodierna]] and [[Alice of Antioch|Alice]], who married into the families of the Count of Tripoli and Prince of Antioch; [[Ioveta of Bethany|Ioveta]], who became an influential abbess; and the eldest, [[Melisende of Jerusalem|Melisende]], who was his heir and succeeded him upon his death in 1131, with her husband [[Fulk of Jerusalem|Fulk V of Anjou]] as king-consort. Their son, the future [[Baldwin III of Jerusalem|Baldwin III]], was named co-heir by his grandfather.{{Sfn|Tyerman|2006|pp=207–208}}

=== Edessa, Damascus, and the Second Crusade ===
{{main|Second Crusade}}
[[File:Croisés.jpg|thumb|Depiction of Crusaders from a 1922 edition of ''[[Petit Larousse]]'']]
Fulk was an experienced [[Crusades|crusader]] and had brought military support to the kingdom during a [[Christian pilgrimage|pilgrimage]] in 1120. He brought Jerusalem into the sphere of the [[Angevin Empire]], as the father of [[Geoffrey V of Anjou]] and grandfather of the future [[Henry II of England]]. Not everyone appreciated the imposition of a foreigner as king. In 1132 Antioch, Tripoli, and Edessa all asserted their independence and conspired to prevent Fulk from exercising the suzerainty of Jerusalem over them. He defeated Tripoli in battle, and settled the regency in Antioch by arranging a marriage between the countess, Melisende's niece [[Constance of Antioch|Constance]], and his own relative [[Raymond of Poitiers]].{{sfn|Mayer|1988|pages=83–85}} Meanwhile, in Jerusalem, the native crusader nobles opposed Fulk's preference for his Angevin retinue. In 1134 [[Hugh II of Jaffa]] revolted against Fulk, allying with the Muslim garrison at Ascalon, for which he was convicted of treason {{lang|la|in absentia}}. The Latin patriarch intervened to settle the dispute, but an assassination attempt was then made on Hugh, for which Fulk was blamed. This scandal allowed Melisende and her supporters to gain control of the government, just as her father had intended.{{sfn|Mayer|1988|pages=83–84}} Accordingly, Fulk {{qi|became so uxorious that...not even in unimportant cases did he take any measures without her knowledge and assistance.}}<ref>William of Tyre, vol. II, bk. 14, ch. 18, pg. 76.</ref>

Fulk was then faced with a new and more dangerous enemy: the atabeg [[Imad ad-Din Zengi|Zengi]] of Mosul, who had taken control of [[Aleppo]] and had set his sights on [[Damascus]] as well; the union of these three states would have been a serious blow to the growing power of Jerusalem. A brief intervention in 1137–1138 by the Byzantine emperor [[John II Comnenus]], who wished to assert imperial suzerainty over all the crusader states, did nothing to stop the threat of Zengi; in 1139 Damascus and Jerusalem recognized the severity of the threat to both states, and an alliance was concluded which halted Zengi's advance. Fulk used this time to construct numerous castles, including [[Ibelin (castle)|Ibelin]] and [[Kerak]].{{sfn|Mayer|1988|pages=86–88}} After the death of both Fulk and Emperor John in separate hunting accidents in 1143, Zengi invaded and [[Siege of Edessa (1144)|conquered Edessa]] in 1144. Queen Melisende, now regent for her elder son Baldwin III, appointed a new constable, [[Manasses of Hierges]], to head the army after Fulk's death, but Edessa could not be recaptured, despite Zengi's own assassination in 1146.{{sfn|Mayer|1988|page=92}} The fall of Edessa shocked Europe, and a [[Second Crusade]] arrived in 1148.

After [[Council of Acre|meeting in Acre]] in June, the crusading kings [[Louis VII of France]] and [[Conrad III of Germany]] agreed with Melisende, Baldwin III and the major nobles of the kingdom to attack [[Damascus]]. Zengi's territory had been divided amongst his sons after his death, and Damascus no longer felt threatened, so an alliance had been made with Zengi's son [[Nur ad-Din Zangi|Nur ad-Din]], the emir of Aleppo. Perhaps remembering attacks launched on Jerusalem from Damascus in previous decades, Damascus seemed to be the best target for the crusade, rather than Aleppo or another city to the north which would have allowed for the recapture of Edessa. The subsequent [[Siege of Damascus (1148)|Siege of Damascus]] was a complete failure; when the city seemed to be on the verge of collapse, the crusader army suddenly moved against another section of the walls, and was driven back. The Crusaders retreated within three days. There were rumours of treachery and bribery, and Conrad III felt betrayed by the nobility of Jerusalem. Whatever the reason for the failure, the French and German armies returned home, and a few years later Damascus was firmly under Nur ad-Din's control.<ref>Jonathan Phillips, ''The Second Crusade: Extending the Frontiers of Christendom'' ([[Yale University Press]], 2007), pp. 216–227.</ref>

=== Civil war ===
The failure of the Second Crusade had dire long-term consequences for the kingdom. The West was hesitant to send large-scale expeditions; for the next few decades, only small armies came, headed by minor European nobles who desired to make a [[Christian pilgrimage|pilgrimage]]. The Muslim states of Syria were meanwhile gradually united by Nur ad-Din, who defeated the Principality of Antioch at the [[Battle of Inab]] in 1149 and gained control of Damascus in 1154. Nur ad-Din was extremely pious and during his rule the concept of [[jihad]] came to be interpreted as a kind of counter-crusade against the kingdom, which was an impediment to Muslim unity, both political and spiritual.{{Sfn|Tyerman|2006|pp=344–345}}

[[File:Tower of david jerusalem.jpg|thumb|The [[Tower of David]] in [[Jerusalem]] as it appears today]]
In Jerusalem, the Crusaders were distracted by a conflict between Melisende and Baldwin III. Melisende continued to rule as regent long after Baldwin came of age. She was supported by, among others, Manasses of Hierges, who essentially governed for her as constable; her son [[Amalric I of Jerusalem|Amalric]], whom she set up as [[Count of Jaffa]]; [[Philip of Milly]]; and the [[Ibelin family]]. Baldwin asserted his independence by mediating disputes in Antioch and Tripoli, and gained the support of the Ibelin brothers when they began to oppose Manasses' growing power, thanks to his marriage to their widowed mother [[Helvis of Ramla]]. In 1153 Baldwin had himself crowned as sole ruler, and a compromise was reached by which the kingdom was divided in two, with Baldwin taking Acre and Tyre in the north and Melisende remaining in control of Jerusalem and the cities of the south. Baldwin was able to replace Manasses with one of his own supporters, [[Humphrey II of Toron]]. Baldwin and Melisende knew that this situation was untenable. Baldwin soon invaded his mother's possessions, defeated Manasses, and besieged his mother in the [[Tower of David]] in Jerusalem. Melisende surrendered and retired to Nablus, but Baldwin appointed her his regent and chief advisor, and she retained some of her influence, especially in appointing ecclesiastical officials.{{sfn|Mayer|1988|pages=108–111}} In 1153, Baldwin launched [[Battle of Ascalon (1153)|an offensive against Ascalon]], the fortress in the south from which Fatimid Egyptian armies had continually raided Jerusalem since the foundation of the kingdom. The fortress was captured and was added to the County of Jaffa, still in the possession of his brother Amalric.{{sfn|Mayer|1988|pages=112}}

=== Byzantine alliance and invasion of Egypt ===
[[File:manuelcomnenus.jpg|right|thumb|[[Byzantine Emperor]] [[Manuel I Comnenus]], who became a close ally of the Kingdom of Jerusalem.]]
With the capture of Ascalon the southern border of the kingdom was now secure, and Egypt, formerly a major threat to the kingdom but now destabilized under the reign of several underaged caliphs, was reduced to a tributary state. Nur ad-Din remained a threat in the east, and Baldwin had to contend with the advances of the Byzantine emperor [[Manuel I Comnenus]], who claimed suzerainty over the Principality of Antioch. In order to bolster the defences of the kingdom against the growing strength of the Muslims, Baldwin III made the first direct alliance with the Byzantine Empire, by marrying [[Theodora Komnene, Queen of Jerusalem|Theodora Comnena]], a niece of emperor Manuel; Manuel married Baldwin's cousin [[Maria of Antioch|Maria]].<ref>Madden, pp. 64–65.</ref> As William of Tyre put it, it was hoped that Manuel would be able "to relieve from his own abundance the distress under which our realm was suffering and to change our poverty into superabundance".<ref>William of Tyre, vol. II, bk. 18 ch. 16, pg. 265.</ref>

The relationship between Byzantium and Jerusalem has divided historians, with some historians supporting the Byzantine interpretation that Amalric recognised Manuel as his overlord, while other scholars such as Andrew Jotischky see the relationship as one of Byzantine protection of Orthodox Christians in Jerusalem.<ref>{{cite book |last1=Andrew Jotischky |title=Crusading and the Crusader States |date=2014 |publisher=Taylor and Francis |isbn=9781317876021 |page=94}}</ref>

When Baldwin died childless in 1162, a year after his mother Melisende, the kingdom passed to his brother Amalric, who renewed the alliance negotiated by Baldwin. In 1163 the chaotic situation in Egypt led to a refusal to pay tribute to Jerusalem, and requests were sent to Nur ad-Din for assistance; in response, [[Crusader invasions of Egypt|Amalric invaded]], but was turned back when the Egyptians flooded the Nile at [[Bilbeis]]. The Egyptian vizier [[Shawar]] again requested help from Nur ad-Din, who sent his general [[Shirkuh]], but Shawar quickly turned against him and allied with Amalric. Amalric and Shirkuh both besieged Bilbeis in 1164, but both withdrew due to Nur ad-Din's campaigns against Antioch, where [[Bohemond III of Antioch]] and [[Raymond III of Tripoli]] were defeated at the [[Battle of Harim]]. It seemed likely that Antioch itself would fall to Nur ad-Din, but he withdrew when Emperor Manuel sent a large Byzantine force to the area. Nur ad-Din sent Shirkuh back to Egypt in 1166, and Shawar again allied with Amalric, who was defeated at the [[Battle of al-Babein]]. Despite the defeat, both sides withdrew, but Shawar remained in control with a crusader garrison in Cairo.{{Sfn|Tyerman|2006|pp=347–348}}{{sfn|Mayer|1988|pages=118–119}} Amalric cemented his alliance with Manuel by marrying Manuel's niece [[Maria Komnene, Queen consort of Jerusalem|Maria Komnene]] in 1167, and an embassy led by William of Tyre was sent to Constantinople to negotiate a military expedition, but in 1168 Amalric pillaged Bilbeis without waiting for the naval support promised by Manuel. Amalric accomplished nothing else, but his actions prompted Shawar to switch sides again and seek help from Shirkuh. Shawar was promptly assassinated, and when Shirkuh died in 1169, he was succeeded by his nephew Yusuf, better known as [[Saladin]]. That year, Manuel sent a large Byzantine fleet of some 300 ships to assist Amalric, and the town of [[Damietta]] was placed under siege. However, the Byzantine fleet sailed with enough provisions for only three months. By the time the Crusaders were ready, supplies were already running out and the fleet retired. Each side sought to blame the other for the failure, but both knew that they could not take Egypt without the other's assistance: the alliance was maintained, and plans for another campaign in Egypt were made, which ultimately were to come to nought.{{sfn|Mayer|1988|pages=119–120}}

In the end, Nur ad-Din was victorious and Saladin established himself as [[Sultan of Egypt]]. Saladin soon began to assert his independence from Nur ad-Din, and with the death of both Amalric and Nur ad-Din in 1174, he was well-placed to begin exerting control over Nur ad-Din's Syrian possessions as well.{{Sfn|Tyerman|2006|p=350}} Upon the death of the pro-western Emperor Manuel in 1180, the Kingdom of Jerusalem lost its most powerful ally.

The subsequent events have often been interpreted as a struggle between two opposing factions, the "court party", made up of Baldwin's mother, Amalric's first wife [[Agnes of Courtenay]], her [[House of Courtenay|immediate family]], and recent arrivals from Europe who were inexperienced in the affairs of the kingdom and who were in favour of war with Saladin; and the "noble party", led by Raymond of Tripoli and the lesser nobility of the kingdom, who favoured peaceful co-existence with the Muslims. This is the interpretation offered by [[William of Tyre]], who was firmly placed in the "noble" camp, and his view was taken up by subsequent historians; in the 20th century, [[Marshall W. Baldwin]],<ref>Marshall W. Baldwin, "The Decline and Fall of Jerusalem, 1174–1189", in ''A History of the Crusades'' (gen. ed. Kenneth M. Setton), vol. 1: The First Hundred Years (ed. Marshall W. Baldwin, University of Wisconsin Press, 1969), pg. 592ff.</ref> [[Steven Runciman]],<ref>[[Steven Runciman]], ''A History of the Crusades'', vol. 2: The Kingdom of Jerusalem and the Frankish East (Cambridge University Press, 1952), pg. 404.</ref> and [[Hans E. Mayer]]{{sfn|Mayer|1988|pages=127–128}} favoured this interpretation. [[Peter W. Edbury]], on the other hand, argues that William, as well as the thirteenth-century authors who continued William's chronicle in French and were allied to Raymond's supporters in the Ibelin family, cannot be considered impartial.<ref>Peter W. Edbury, "Propaganda and faction in the Kingdom of Jerusalem: the background to Hattin", in ''Crusaders and Moslems in Twelfth-Century Syria'' (ed. Maya Shatzmiller, Leiden: Brill, 1993), pg. 174.</ref> Although the events were clearly a dynastic struggle, {{qi|the division was not between native barons and newcomers from the West, but between the king's maternal and paternal kin.}}{{Sfn|Hamilton|2000|p=158}}

[[Miles of Plancy]] was briefly [[Officers of the Kingdom of Jerusalem#Bailiffs|''bailli'']] or regent during [[Baldwin IV]]'s minority. Miles was assassinated in October 1174, and Count [[Raymond III of Tripoli]], Amalric's first cousin, became regent. It is highly probable that Raymond or his supporters engineered the assassination.{{Sfn|Hamilton|2000|p=93}} Baldwin reached his majority in 1176, and despite his illness he no longer had any legal need for a regent. Since Raymond was his nearest relative in the male line with a strong claim to the throne, there was concern about the extent of his ambitions, although he had no direct heirs of his own. To balance this, the king turned from time to time to his uncle, [[Joscelin III of Edessa]], who was appointed seneschal in 1176; Joscelin was more closely related to Baldwin than Raymond was, but had no claim to the throne himself.{{Sfn|Hamilton|2000|pp=105–106}}

As a leper, Baldwin had no children and could not be expected to rule much longer, so the focus of his succession passed to his sister [[Sibylla of Jerusalem|Sibylla]] and his younger half-sister [[Isabella I of Jerusalem|Isabella]]. Baldwin and his advisors recognised that it was essential for Sibylla to be married to a Western nobleman in order to access support from European states in a military crisis; while Raymond was still regent, a marriage was arranged for Sibylla and [[William of Montferrat, Count of Jaffa and Ascalon|William of Montferrat]], a cousin of Louis VII of France and of [[Frederick I, Holy Roman Emperor|Frederick Barbarossa, Holy Roman Emperor]]. It was hoped that by allying with a relative of the Western emperor, Frederick would come to the kingdom's aid.{{Sfn|Hamilton|2000|p=101}} Jerusalem looked again towards the Byzantine Empire for help, and Emperor Manuel was looking for a way to restore his empire's prestige after his defeat at the [[Battle of Myriokephalon]] in 1176; this mission was undertaken by [[Raynald of Châtillon]].{{Sfn|Hamilton|2000|p=115}} After William of Montferrat arrived in 1176, he fell ill and died in June 1177, leaving Sibylla widowed and pregnant with the future [[Baldwin V of Jerusalem|Baldwin V]]. Raynald was then named regent.{{Sfn|Hamilton|2000|p=118}}

[[File:Plan of Jerusalem, 12th Century. ca. 1200.jpg|right|thumb|An idealized twelfth-century map of the crusader Kingdom of Jerusalem.]]
Soon afterwards, [[Philip I, Count of Flanders|Philip of Flanders]] arrived in Jerusalem on [[Christian pilgrimage|pilgrimage]]; he was Baldwin IV's cousin, and the king offered him the regency and command of the army, both of which Philip refused, although he objected to the appointment of Raynald as regent. Philip then attempted to intervene in the negotiations for Sibylla's second husband, and suggested one of his own retinue, but the native barons refused his suggestion. In addition, Philip seemed to think he could carve out a territory of his own in Egypt, but he refused to participate in the planned Byzantine-Jerusalem expedition. The expedition was delayed and finally cancelled, and Philip took his army away to the north.{{Sfn|Hamilton|2000|pp=122–130}}

Most of the army of Jerusalem marched north with Philip, Raymond III, and Bohemond III to attack [[Hama]], and Saladin took the opportunity to invade the kingdom. Baldwin proved to be an effective and energetic king as well as a brilliant military commander: he defeated Saladin at the [[Battle of Montgisard]] in September 1177 despite being greatly outnumbered and having to rely on a [[levee-en-masse]]. Although Baldwin's presence despite his illness was inspirational, direct military decisions were actually made by Raynald.{{Sfn|Hamilton|2000|pp=132–136}}

[[Hugh III of Burgundy]] was expected to come to Jerusalem and marry Sibylla, but Hugh was unable to leave France due to the political unrest there in 1179–1180 following the death of Louis VII. Meanwhile, Baldwin IV's stepmother Maria, mother of Isabella and stepmother of Sibylla, married [[Balian of Ibelin]]. At Easter in 1180, Raymond and his cousin [[Bohemond III of Antioch]] attempted to force Sibylla to marry Balian's brother [[Baldwin of Ibelin]]. Raymond and Bohemond were King Baldwin's nearest male relatives in the paternal line, and could have claimed the throne if the king died without an heir or a suitable replacement. Before Raymond and Bohemond arrived, Agnes and King Baldwin arranged for Sibylla to be married to a [[Poitou|Poitevin]] newcomer, [[Guy of Lusignan]], whose older brother [[Amalric II of Jerusalem|Amalric of Lusignan]] was already an established figure at court.{{Sfn|Hamilton|2000|pp=150–158}} Internationally, the Lusignans were useful as vassals of Baldwin and Sibylla's cousin [[Henry II of England]]. Baldwin betrothed eight-year-old Isabella to [[Humphrey IV of Toron]], stepson of the powerful [[Raynald of Châtillon]], thereby removing her from the influence of the [[Ibelin family]] and that of her mother.{{Sfn|Hamilton|2000|p=161}}

The dispute between the two factions in the kingdom affected the election of a new Patriarch in 1180. When Patriarch Amalric died on 6 October 1180, the two most obvious choices for his successor were William of Tyre and Heraclius of Caesarea. They were fairly evenly matched in background and education, but politically they were allied with opposite parties, as Heraclius was one of Agnes of Courtenay's supporters. The canons of the Holy Sepulchre asked the king for advice, and Heraclius was chosen through Agnes' influence. There were rumours that Agnes and Heraclius were lovers, but this information comes from the partisan 13th-century continuations of William of Tyre's history, and there is no other evidence to substantiate such a claim.<ref>Hamilton, pp. 162–163; Edbury and Rowe, "William of Tyre and the Patriarchal election of 1180", ''[[The English Historical Review]]'' 93 (1978), repr. ''Kingdoms of the Crusaders: From Jerusalem to Cyprus'' (Aldershot: Ashgate, Variorum Collected Series Studies, 1999), pp. 23–25.</ref>

At the end of 1181, Raynald of Châtillon raided south into Arabia, in the direction of [[Medina]], although he did not make it that far. It was probably around this time that Raynald also attacked a Muslim caravan. The kingdom had a truce with Saladin at the time, and Raynald's actions have been seen as an independent act of brigandage; it is possible that he was trying to prevent Saladin from moving his forces north to take control of Aleppo, which would have strengthened Saladin's position.{{Sfn|Hamilton|2000|pp=170–171}} In response, Saladin attacked the kingdom in 1182, but was defeated at [[Battle of Belvoir Castle (1182)|Belvoir Castle]]. King Baldwin, although quite ill, was still able to command the army in person. Saladin attempted to besiege Beirut from land and sea, and Baldwin raided Damascene territory, but neither side did significant damage. In December 1182, [[Crusader Red Sea raids|Raynald launched a naval expedition]] on the [[Red Sea]], which made it as far south as [[Rabigh]]. The expedition was defeated and two of Raynald's men were actually taken to [[Mecca]] to be executed in public. Like his earlier raids, Raynald's expedition is usually seen as selfish and ultimately fatal for Jerusalem, but according to Bernard Hamilton, it was actually a shrewd strategy, meant to damage Saladin's prestige and reputation.{{Sfn|Hamilton|2000|pp=174–183}}

In 1183 a general tax was levied throughout the kingdom, which was unprecedented in Jerusalem and almost all of medieval Europe to that point. The tax helped pay for larger armies for the next few years. More troops were certainly needed, since Saladin was finally able to gain control of Aleppo, and with peace in his northern territories, he could focus on Jerusalem in the south. King Baldwin was so incapacitated by his leprosy that it was necessary to appoint a regent, and Guy of Lusignan was chosen, as he was Baldwin's legal heir and the king was not expected to live. The inexperienced Guy led the Frankish army against Saladin's incursions into the kingdom, but neither side made any real gains, and Guy was criticized by his opponents for not striking against Saladin when he had the chance.{{Sfn|Hamilton|2000|pp=186–192}}

In October 1183, Isabella married Humphrey of Toron at [[Kerak]] during a [[siege of Kerak|siege]] by Saladin, who perhaps hoped to take some valuable prisoners. As King Baldwin, although now blind and crippled, had recovered enough to resume his reign and his command of the army, Guy was removed from the regency and his five-year-old stepson, King Baldwin's nephew [[Baldwin V of Jerusalem|and namesake Baldwin]], was crowned as co-king in November. King Baldwin himself then went to relieve the castle, carried on a litter, and attended by his mother. He was reconciled with Raymond of Tripoli and appointed him military commander. The siege was lifted in December and Saladin retreated to Damascus.{{Sfn|Hamilton|2000|pp=192–196}} Saladin attempted another siege in 1184, but Baldwin repelled that attack as well, and Saladin raided [[Nablus]] and other towns on the way home.{{Sfn|Hamilton|2000|pp=202–203}}

In October 1184, Guy of Lusignan led an attack on the [[Bedouin]] nomads from his base in Ascalon. Unlike Raynald's attacks on caravans, which may have had some military purpose, Guy attacked a group that was usually loyal to Jerusalem and provided intelligence about the movements of Saladin's troops. At the same time, King Baldwin contracted his final illness and Raymond of Tripoli, rather than Guy, was appointed as his regent. His nephew Baldwin was paraded in public, wearing his crown as Baldwin V. Baldwin IV finally succumbed to his leprosy in May 1185.{{Sfn|Hamilton|2000|pp=204–210}}

Meanwhile, the succession crisis had prompted a mission to the West to seek assistance. In 1184, Patriarch Heraclius travelled throughout the courts of Europe, but no help was forthcoming. Heraclius offered the {{qi|keys of the Holy Sepulchre, those of the Tower of David and the banner of the Kingdom of Jerusalem}}, but not the crown itself, to both [[Philip II of France]] and [[Henry II of England]]; the latter, as a grandson of Fulk, was a first cousin of the royal family of Jerusalem, and had promised to go on crusade after the murder of [[Thomas Becket]]. Both kings preferred to remain at home to defend their own territories, rather than act as regent for a child in Jerusalem. The few European knights who did travel to Jerusalem did not even see any combat, since the truce with Saladin had been re-established. [[William V of Montferrat]] was one of the few who came to his grandson Baldwin V's aid.{{Sfn|Hamilton|2000|pp=212–216}}

[[File:Balduins tomb.jpg|thumb|The tomb of Baldwin V on an 18th-century drawing by [[Elzear Horn]]]]
Baldwin V's rule, with Raymond of Tripoli as regent and his great-uncle Joscelin of Edessa as his guardian, was short. He was a sickly child and died in the summer of 1186. Raymond and his supporters went to Nablus, presumably in an attempt to prevent Sibylla from claiming the throne, but Sibylla and her supporters went to Jerusalem, where it was decided that the kingdom should pass to her, on the condition that her marriage to Guy be annulled. She agreed but only if she could choose her own husband and king, and after being crowned, she immediately crowned Guy with her own hands. Raymond had refused to attend the coronation, and in Nablus he suggested that Isabella and Humphrey should be crowned instead, but Humphrey refused to agree to this plan which would have certainly started a civil war. Humphrey went to Jerusalem and swore allegiance to Guy and Sibylla, as did most of Raymond's other supporters. Raymond himself refused to do so and left for Tripoli; [[Baldwin of Ibelin]] also refused, gave up his fiefs, and left for Antioch.{{Sfn|Hamilton|2000|pp=216–223}}

=== Loss of Jerusalem and the Third Crusade ===
{{main|Third Crusade}}
[[File:Jan Lievens- King Guy of Lusignan and King Saladin.tif|thumb|right|17th-century interpretation of [[Guy of Lusignan]] (right) being held captive by [[Saladin]] (left), clad in a traditional (Islamic) royal garment, painted by [[Jan Lievens]].]]
[[File:Crusader States 1190.svg|thumb|The Near East, {{c.|1190}}, at the outset of the Third Crusade]]
Raymond of Tripoli allied with Saladin against Guy and allowed a Muslim garrison to occupy his fief in [[Tiberias]], probably hoping that Saladin would help him overthrow Guy. Saladin, meanwhile, had pacified his Mesopotamian territories, and was now eager to attack the crusader kingdom; he did not intend to renew the truce when it expired in 1187. Before the truce expired, Raynald of Chatillon, the lord of Oultrejourdain and of Kerak and one of Guy's chief supporters, recognized that Saladin was massing his troops, and attacked Muslim caravans in an attempt to disrupt this. Guy was on the verge of attacking Raymond, but realized that the kingdom would need to be united in the face of the threat from Saladin, and [[Balian of Ibelin]] effected a reconciliation between the two during Easter in 1187. Saladin attacked Kerak again in April, and in May, a Muslim raiding party ran into the much smaller embassy on its way to negotiate with Raymond, and defeated it at the [[Battle of Cresson]] near Nazareth. Raymond and Guy finally agreed to attack Saladin at Tiberias, but could not agree on a plan; Raymond thought a pitched battle should be avoided, but Guy probably remembered the criticism he faced for avoiding battle in 1183, and it was decided to march out against Saladin directly. On 4 July 1187, the army of the kingdom was utterly destroyed at the [[Battle of Hattin]]. Raymond of Tripoli, Balian of Ibelin, and [[Reginald of Sidon]] escaped, but Raynald was executed by Saladin and Guy was imprisoned in Damascus.{{Sfn|Hamilton|2000|pp=223–231}}

Over the next few months, Saladin easily overran the entire kingdom. Only the port of Tyre remained in Frankish hands, defended by [[Conrad of Montferrat]], who had coincidentally arrived just in time from [[Constantinople]]. The [[Siege of Jerusalem (1187)|fall of Jerusalem]] essentially ended the first Kingdom of Jerusalem. Much of the population, swollen with refugees fleeing Saladin's conquest of the surrounding territory, was allowed to flee to Tyre, Tripoli, or Egypt (whence they were sent back to Europe), but those who could not pay for their freedom were sold into slavery, and those who could were often robbed by Christians and Muslims alike on their way into exile. The capture of the city led to the [[Third Crusade]], launched in 1189 and led by [[Richard I of England|Richard the Lionheart]], [[Philip II of France|Philip Augustus]] and [[Frederick I, Holy Roman Emperor|Frederick Barbarossa]], though the last drowned en route.{{Sfn|Edbury|1991|pp=4–5}}

Guy of Lusignan, who had been refused entry to Tyre by Conrad, began to besiege Acre in 1189. During the [[Siege of Acre (1189–1191)|lengthy siege]], which lasted until 1191, Patriarch Heraclius, Queen Sibylla and her daughters, and many others died of disease. With the death of Sibylla in 1190, Guy now had no legal claim to the kingship, and the succession passed to Sibylla's half-sister Isabella. Isabella's mother Maria and the Ibelins (now closely allied to Conrad) argued that Isabella and Humphrey's marriage was illegal, as she had been underage at the time; underlying this was the fact that Humphrey had betrayed his wife's cause in 1186. The marriage was annulled amid some controversy. Conrad, who was now the nearest kinsman to Baldwin V in the male line, and had already proved himself a capable military leader, then married Isabella, but Guy refused to concede the crown.{{Sfn|Edbury|1991|pp=25–26}}

When Richard arrived in 1191, he and Philip took different sides in the succession dispute. Richard backed Guy, his vassal from Poitou, while Philip supported Conrad, a cousin of his late father Louis VII. After much ill feeling and ill health, Philip returned home in 1191, soon after the fall of Acre. Richard defeated Saladin at the [[Battle of Arsuf]] in 1191 and the [[Battle of Jaffa (1192)|Battle of Jaffa]] in 1192, recovering most of the coast, but could not recover Jerusalem or any of the inland territory of the kingdom. It has been suggested that this may have actually been a strategic decision by Richard rather than a failure as such, as he may have recognized that Jerusalem, in particular, was in fact a strategic liability as long as the Crusaders were obligated to defend it, as it was isolated from the sea where Western reinforcements could arrive.<ref>Stark, ''God's Battalions''</ref> Conrad was unanimously elected king in April 1192, but was murdered by the [[Hashshashin]] only days later. Eight days after that, the pregnant Isabella was married to Count [[Henry II of Champagne]], nephew of Richard and Philip, but politically allied to Richard. As compensation, Richard sold Guy the [[Kingdom of Cyprus|island of Cyprus]], which Richard had captured on the way to Acre, although Guy continued to claim the throne of Jerusalem until his death in 1194.{{Sfn|Edbury|1991|pp=26–29}}

The crusade came to an end peacefully, with the [[Treaty of Ramla]] negotiated in 1192; Saladin allowed [[Christian pilgrimage|pilgrimages]] to be made to Jerusalem, allowing the crusaders to fulfil their vows, after which they all returned home. The native crusader barons set about rebuilding their kingdom from Acre and the other coastal cities.

=== {{anchor|The Kingdom of Acre}}Kingdom of Acre ===
For the next hundred years, the Kingdom of Jerusalem remained a tiny kingdom hugging the Syrian coastline. Its capital was moved to Acre and controlled most of the coastline of present-day Israel and southern and central Lebanon, including the strongholds and towns of Jaffa, Arsuf, Caesarea, Tyre, Sidon, and Beirut. At best, it included only a few other significant cities, such as Ascalon and some interior fortresses, as well as [[suzerainty]] over Tripoli and Antioch. The new king, Henry of Champagne, died accidentally in 1197, and Isabella married for a fourth time, to [[Aimery of Jerusalem|Aimery of Lusignan]], Guy's brother. Aimery had already inherited Cyprus from Guy, and had been crowned king by Frederick Barbarossa's son, Emperor [[Henry VI, Holy Roman Emperor|Henry VI]]. Henry led a [[Crusade of 1197|crusade in 1197]] but died along the way. Nevertheless, his troops recaptured Beirut and Sidon for the kingdom before returning home in 1198.{{Sfn|Edbury|1991|pp=31–33}}<ref>Riley-Smith, ''The Crusades: A History'' (2nd ed., Yale University Press, 2005), pp. 146–147.</ref> A five-year truce was then concluded with the Ayyubids in Syria in 1198.<ref>Riley-Smith, ''The Crusades: A History'', p. 150.</ref>

The Ayyubid empire had fallen into civil war after the death of Saladin in 1193. His sons claimed various parts of his empire: [[Malik az-Zahir|az-Zahir]] took control of Aleppo, [[al-Aziz Uthman]] held Cairo, while his eldest son, [[al-Afdal ibn Salah ad-Din|al-Afdal]], retained Damascus. Saladin's brother [[Al-Adil I|Al-Adil Sayf ad-Din]] (often called "Saphadin" by the Crusaders) acquired [[Al-Jazira, Mesopotamia|al-Jazira]] (northern Mesopotamia), and al-Adil's son [[Al-Mu'azzam Isa|al-Mu'azzam]] took possession of [[Al Karak|Karak]] and [[Oultrejordain|Transjordan]]. In 1196, al-Afdal was driven out of Damascus by al Adil in alliance with Uthman. When Uthman died in 1198, al Afdal returned to power as regent in Egypt for Uthman's infant son. Allied with az-Zahir, he then attacked his uncle in Damascus. The alliance fell apart, and al-Adil then defeated al Afdal in Egypt and annexed the country. In 1200 Al-Adil proclaimed himself Sultan of Egypt and Syria, entrusting Damascus to al-Mu'azzam and al-Jazira to another son, [[al-Kamil]]. Following a second unsuccessful siege of Damascus by the two brothers, Al Afdal accepted a fief consisting of [[Samosata]] and a number of other towns. Az-Zahir of Aleppo submitted to his uncle in 1202, thus re-uniting the Ayyubid territories.<ref>Humphreys, pp. 111–122</ref>

Meanwhile, schemes were hatched to reconquer Jerusalem through Egypt. A [[Fourth Crusade]] was planned after the failure of the Third, but it resulted in the [[Siege of Constantinople (1204)|sack of Constantinople]] in 1204, and most of the crusaders involved never arrived in the kingdom. Aimery, however, not knowing of the diversion to Constantinople, raided Egypt in advance of the expected invasion.<ref>Riley-Smith, ''The Crusades: A History'', pp. 153–160.</ref> Both Isabella and Aimery died in 1205 and again an underage girl, Isabella and Conrad's daughter [[Maria of Montferrat]], became queen of Jerusalem. Isabella's half-brother [[John of Ibelin, the Old Lord of Beirut]] governed as regent until 1210 when Maria married an experienced French knight, [[John of Brienne]].{{Sfn|Edbury|1991|pp=40–41}} Maria died in childbirth in 1212, and John of Brienne continued to rule as regent for their daughter [[Isabella II of Jerusalem|Isabella II]].{{Sfn|Edbury|1991|p=48}}

=== Fifth and Sixth Crusades and Frederick II ===
[[File:Al-Kamil Muhammad al-Malik and Frederick II Holy Roman Emperor.jpg|thumb|Frederick II (left) meets al-Kamil (right). ''[[Nuova Cronica]]'' by [[Giovanni Villani]] (14th century).]]
The [[Fourth Lateran Council]] in 1215 called for a new, better-organized crusade against Egypt. In late 1217 King [[Andrew II of Hungary]] and Duke [[Leopold VI of Austria]] arrived in Acre and, along with John of Brienne, raided territory further inland, including [[Mount Tabor]], but without success.<ref>James M. Powell, ''Anatomy of a Crusade: 1213–1221'' (University of Pennsylvania Press, 1986), pp. 128–135.</ref> After the departure of the Hungarians, the remaining Crusaders set about refortifying [[Caesarea Maritima|Caesarea]] and the Templar fortress of [[Château Pèlerin]] throughout the winter of 1217 and spring of 1218.<ref>Thomas C. Van Cleve, "The Fifth Crusade", in ''A History of the Crusades'' (gen. ed. Kenneth M. Setton), vol. 2: The Later Crusades, 1189–1311 (ed. R.L. Wolff and H.W. Hazard, University of Wisconsin Press, 1969), pp. 394–395.</ref>

In the spring of 1218 the [[Fifth Crusade]] began in earnest when German crusader fleets landed at Acre. Along with King John, who was elected leader of the crusade, the fleets sailed to Egypt and besieged [[Damietta]] at the mouth of the Nile in May. The siege progressed slowly, and the Egyptian sultan al-Adil died in August 1218, supposedly of shock after the Crusaders managed to capture one of Damietta's towers. He was succeeded by his son [[al-Kamil]]. In the autumn of 1218 reinforcements arrived from Europe, including the papal legate [[Pelagius of Albano]]. In the winter the crusaders were affected by floods and disease, and the siege dragged on throughout 1219, when [[Francis of Assisi]] arrived to attempt to negotiate a truce. Neither side could agree to terms, despite the Ayyubid offer of a thirty-year truce and the restoration of Jerusalem and most of the rest of the former kingdom. The Crusaders finally managed to starve out the city and captured it in November. Al-Kamil retreated to the nearby fortress of [[al-Mansurah]], but the crusaders remained in Damietta throughout 1219 and 1220, awaiting the arrival of Holy Roman Emperor [[Frederick II, Holy Roman Emperor|Frederick II]], while King John returned to Acre briefly to defend against al-Mu'azzam, who was raiding the kingdom from Damascus in John's absence. Still expecting the emperor's imminent arrival, in July 1221, the Crusaders set off towards Cairo, but they were stopped by the [[Flooding of the Nile|rising Nile]], which al-Kamil allowed to flood by breaking the dams along its course. The sultan easily defeated the trapped Crusader army and regained Damietta. Emperor Frederick had, in fact, never left Europe at all.<ref>Powell, pp. 137–195.</ref>

After the failure of the crusade, John travelled throughout Europe seeking assistance, but found support only from Frederick, who then married John and Maria's daughter Isabella II in 1225. The next year, Isabella died giving birth to their son [[Conrad IV of Germany|Conrad IV]], who succeeded his mother to the throne although he never appeared in the East. Frederick had reneged on his promise to lead the Fifth Crusade, but was now eager to cement his claim to the throne through Conrad. There were also plans to join with al-Kamil in attacking al-Mu'azzam in Damascus, an alliance which had been discussed with Egyptian envoys in Italy. But after continually delaying his departure for the Holy Land, including suffering an outbreak of disease in his fleet, he was excommunicated by [[Pope Gregory IX]] in 1227. The crusaders, led not by Frederick but by his representatives [[Richard Filangieri]], [[Henry IV, Duke of Limburg]], and [[Hermann of Salza]], [[Grand Master of the Teutonic Knights]], arrived in the east late in 1227, and while waiting for the emperor they set about refortifying [[Sidon]], where they built the [[Sidon Sea Castle|sea castle]], and [[Montfort Castle|Montfort]], which later became the headquarters of the [[Teutonic Knights]]. The Ayyubids of Damascus did not dare attack, as al-Mu'azzam had suddenly died not long before. Frederick finally arrived on the [[Sixth Crusade]] in September 1228, and claimed the regency of the kingdom in the name of his infant son.{{Sfn|Edbury|1991|pp=55–56}}

Frederick immediately came into conflict with the native nobles of Outremer, some of whom resented his attempts to impose Imperial authority over both Cyprus and Jerusalem. The Cypriot nobles were already quarrelling amongst themselves about the regency for [[Henry I of Cyprus]], who was still a child. The High Court of Cyprus had elected John of Ibelin as regent, but Henry's mother [[Alice of Champagne]] wished to appoint one of her supporters; Alice and her party, members or supporters of the [[Lusignan dynasty]], sided with Frederick, whose father had crowned Aimery of Lusignan king in 1197. At [[Limassol]], Frederick demanded that John give up not only the regency of Cyprus, but also John's own lordship of Beirut on the mainland. John argued that Frederick had no legal authority to make such demands and refused to give up either title. Frederick then imprisoned John's sons as hostages to guarantee John's support for his crusade.{{Sfn|Edbury|1991|pp=57–64}}

John did accompany Frederick to the mainland, but Frederick was not well-received there; one of his few supporters was [[Balian Grenier|Balian, Lord of Sidon]], who had welcomed the crusaders the year before and now acted as an ambassador to the Ayyubids. The death of al-Mu'azzam negated the proposed alliance with al-Kamil, who along with his brother [[Al-Ashraf Musa, Emir of Damascus|al-Ashraf]] had taken possession of Damascus (as well as Jerusalem) from their nephew, al-Mu'azzam's son [[an-Nasir Dawud]]. However, al-Kamil presumably did not know of the small size of Frederick's army, nor the divisions within it caused by his excommunication, and wished to avoid defending his territories against another crusade. Frederick's presence alone was sufficient to regain Jerusalem, Bethlehem, Nazareth, and a number of surrounding castles without a fight: these were recovered in February 1229, in return for a ten-year truce with the Ayyubids and freedom of worship for Jerusalem's Muslim inhabitants. The terms of the treaty were unacceptable to the Patriarch of Jerusalem [[Gerald of Lausanne]], who placed the city under [[interdict]]. In March, Frederick crowned himself in the Church of the Holy Sepulchre, but because of his excommunication and the interdict Jerusalem was never truly reincorporated into the kingdom, which continued to be ruled from Acre.<ref>Riley-Smith, ''The Crusades: A History'', 2nd ed., pp. 180–182.</ref>

Meanwhile, in Italy, the Pope used Frederick's excommunication as an excuse to invade his Italian territories; the papal armies were led by Frederick's former father-in-law John of Brienne. Frederick was forced to return home in 1229, leaving the Holy Land {{qi|not in triumph, but showered with offal}} by the citizens of Acre.<ref>Riley-Smith, ''The Crusades: A History'', 2nd ed., p. 182.</ref>

=== War of the Lombards and the Barons' Crusade ===
{{Main|War of the Lombards}}
[[File:JanBrienne.jpg|thumb|Coronation of [[Maria of Montferrat]] and [[John of Brienne]], King of Jerusalem and [[Latin Emperor of Constantinople]]]]
Nevertheless, Frederick [[War of the Lombards|sent an Imperial army]] in 1231, under Richard Filangieri, who occupied Beirut and Tyre, but was unable to gain control of Acre. John's supporters formed a [[Commune of Acre|commune in Acre]], of which John himself was elected mayor in 1232. With the help of the [[Genoa|Genoese]] merchants, the commune recaptured Beirut. John also attacked Tyre, but was defeated by Filangieri at the [[Battle of Casal Imbert]] in May 1232.{{Sfn|Edbury|1991|pp=57–64}}

In Cyprus, King Henry I came of age in 1232 and John's regency was no longer necessary. Both John and Filangieri raced back to Cyprus to assert their authority, and the imperial forces were defeated at the [[Battle of Agridi]] on June 15. Henry became the undisputed king of Cyprus, but continued to support the Ibelins over the Lusignans and the imperial party. On the mainland, Filangieri had the support of [[Bohemund IV of Antioch]], the [[Teutonic Knights]], the [[Knights Hospitaller]], and the [[Pisa]]n merchants. John was supported by his nobles on Cyprus, and by his continental holdings in Beirut, [[Caesarea Maritima|Caesarea]], and [[Arsuf]], as well as by the [[Knights Templar]] and the Genoese. Neither side could make any headway, and in 1234 Gregory IX excommunicated John and his supporters. This was partly revoked in 1235, but still no peace could be made. John died in 1236 and the war was taken up by his son [[Balian of Beirut]] and his nephew [[Philip of Montfort, Lord of Tyre|Philip of Montfort]].{{Sfn|Tyerman|2006|pp=725–726}}

Meanwhile, the treaty with the Ayyubids was set to expire in 1239. Plans for a new crusade to be led by Frederick came to nothing, and Frederick himself was excommunicated by Gregory IX again in 1239. However, other European nobles took up the cause, including [[Theobald I of Navarre|Theobald IV]], [[Count of Champagne]] and [[King of Navarre]], [[Peter I, Duke of Brittany|Peter of Dreux]], and [[Amaury de Montfort (died 1241)|Amaury de Montfort]], who arrived in Acre in September 1239. Theobald was elected leader of [[Barons' Crusade|the crusade]] at a council in Acre, attended by most of the important nobles of the kingdom, including [[Walter IV of Brienne|Walter of Brienne]], [[John of Arsuf]], and [[Balian Grenier|Balian of Sidon]]. The arrival of the crusade was a brief respite from the Lombard War; Filangieri remained in Tyre and did not participate. The council decided to refortify Ascalon in the south and attack Damascus in the north.

The crusaders may have been aware of the new divisions among the Ayyubids; al-Kamil had occupied Damascus in 1238 but had died soon afterwards, and his territory was inherited by his family. His sons [[al-Adil II|al-Adil abu Bakr]] and [[as-Salih Ayyub]] inherited Egypt and Damascus. Ayyub marched on Cairo in an attempt to drive out al-Adil, but during his absence al-Kamil's brother [[As-Salih Ismail, Emir of Damascus|as-Salih Isma'il]] took over Damascus, and Ayyub was taken prisoner by an-Nasir Dawud. The Crusaders, meanwhile, marched to Ascalon. Along the way, Walter of Brienne captured livestock intended to resupply Damascus, as the Ayyubids had probably learned of the Crusaders' plans to attack it. The victory was short-lived, however, as the Crusaders were then defeated by the Egyptian army at Gaza in November 1239. [[Henry II, Count of Bar]] was killed and Amaury of Montfort captured. The Crusaders returned to Acre, possibly because the native barons of the kingdom were suspicious of Filangieri in Tyre. Dawud took advantage of the Ayyubid victory to recapture Jerusalem in December, the ten-year truce having expired.

Although Ayyub was Dawud's prisoner, the two now allied against al-Adil in Egypt, which Ayyub seized in 1240. In Damascus, Isma'il recognized the threat of Dawud and Ayyub against his own possessions, and turned to the Crusaders for assistance. Theobald concluded a treaty with Isma'il, in return for territorial concessions that restored Jerusalem to Christian control, as well as much of the rest of the former kingdom, even more territory than Frederick had recovered in 1229. Theobald, however, was frustrated by the Lombard War, and returned home in September 1240. Almost immediately after Theobald's departure, [[Richard, 1st Earl of Cornwall|Richard of Cornwall]] arrived. He completed the rebuilding of Ascalon, and also made peace with Ayyub in Egypt. Ayyub confirmed Isma'il's concessions in 1241, and prisoners taken at Gaza were exchanged by both sides. Richard returned to Europe in 1241.<ref>Michael Lower, ''The Barons' Crusade: A Call to Arms and its Consequences'' (University of Pennsylvania Press, 2005), pp. 159–177.</ref>

Although the kingdom had essentially been restored, the Lombard War continued to occupy the kingdom's nobility. As the Templars and Hospitallers supported opposite sides, they also attacked each other, and the Templars broke the treaty with the Ayyubids by attacking Nablus in 1241. Conrad proclaimed that he had come of age in 1242, eliminating both Frederick's claim to the regency and the need for an imperial guardian to govern in his place, although he had not yet turned 15, the age of majority according to the customs of Jerusalem. Through Conrad, Frederick tried to send an imperial regent, but the anti-imperial faction in Acre argued that Jerusalem's laws allowed them to appoint their own regent. In June the ''Haute Cour'' granted the regency to Alice of Champagne, who, as the daughter of Isabella I, was Conrad's great-aunt and his closest relative living in the kingdom. Alice ordered Filangieri to be arrested, and along with the Ibelins and Venetians, besieged Tyre, which fell in July 1243. The Lombard War was over, but the king was still absent, as Conrad never came to the East. Alice was prevented from exercising any real power as regent by Philip of Montfort, who took control of Tyre, and Balian of Beirut, who continued to hold Acre.{{Sfn|Tyerman|2006|pp=725–726}}

=== Crusade of Louis IX ===
The Ayyubids were still divided between Ayyub in Egypt, Isma'il in Damascus, and Dawud in Kerak. Isma'il, Dawud, and [[al-Mansur Ibrahim]] of Homs went to war with Ayyub, who hired the [[Khwarazmian dynasty|Khwarazmians]] to fight for him. The Khwarazmians were nomadic Turks from central Asia, who had recently been displaced by the [[Mongol Empire|Mongols]] further to the east and were now residing in Mesopotamia. With Ayyub's support, they [[Siege of Jerusalem (1244)|sacked Jerusalem]] in the summer of 1244, leaving it in ruins and useless to both Christians and Muslims. In October, the Khwarazmians, along with the Egyptian army under the command of [[Baibars]], were met by the Frankish army, led by Philip of Montfort, Walter of Brienne, and the masters of the Templars, Hospitallers, and Teutonic Knights, along with al-Mansur and Dawud. On October 17 the Egyptian-Khwarazmian army destroyed the Frankish-Syrian coalition, and Walter of Brienne was taken captive and later executed. By 1247, Ayyub had reoccupied most of the territory that had been conceded in 1239, and had also gained control of Damascus.{{Sfn|Tyerman|2006|pp=770–771}}

[[Seventh Crusade|A new crusade]] was discussed at the [[First Council of Lyon|Council of Lyon]] in 1245 by [[Pope Innocent IV]]. The council deposed Frederick II, so no help could be expected from the empire, but King [[Louis IX of France]] had already vowed to go on crusade. Louis arrived in Cyprus in 1248, where he gathered an army of his own men, including his brothers [[Robert of Artois]], [[Charles of Anjou]], and [[Alphonse of Poitiers]], and those of Cyprus and Jerusalem, led by the Ibelin family [[John of Ibelin (jurist)|John of Jaffa]], [[Guy of Ibelin, constable of Cyprus|Guy of Ibelin]], and [[Balian of Beirut]]. Once again the target was Egypt. Damietta was captured without resistance when the Crusaders landed in June 1249, but the crusade halted there until November, by which time the Egyptian sultan Ayyub had died and had been succeeded by his son [[Al-Muazzam Turanshah|Turanshah]]. In February, the Crusaders were defeated at the [[Battle of Mansurah (1250)|Battle of al-Mansurah]], where Robert of Artois was killed. The crusaders were unable to cross the Nile, and, suffering from disease and lack of supplies, retreated towards Damietta in April. They were defeated along the way at the [[Battle of Fariskur (1250)|Battle of Fariskur]], with Louis being taken captive by Turanshah. During Louis' captivity, Turanshah was overthrown by his Mamluk soldiers, led by the general [[Aybak]], who then released Louis in May in return for Damietta and a large ransom. For the next four years Louis resided in Acre, and helped refortify that city along with Caesarea, Jaffa, and Sidon. He also made truces with the Ayyubids in Syria, and sent embassies to negotiate with the Mongols, who were beginning to threaten the Muslim world, before returning home in 1254. He left behind a large garrison of French soldiers in Acre, under the command of [[Geoffrey of Sergines]].{{Sfn|Tyerman|2006|pp=784–803}}

In the midst of these events, Alice of Champagne had died in 1246 and had been replaced as regent by her son King [[Henry I of Cyprus]], for whom John of Jaffa served as ''bailli'' in Acre. During Louis IX's stay in Acre, Henry I died in 1253, and was succeeded in Cyprus by his infant son [[Hugh II of Cyprus|Hugh II]]. Hugh was technically regent of Jerusalem as well, both for Conrad and for Conrad's son [[Conradin]] after Conrad died in 1254. Both Cyprus and Jerusalem were governed by Hugh's mother [[Plaisance of Antioch]], but John remained ''bailli'' for Hugh in Acre. John made peace with Damascus and attempted to regain Ascalon; the Egyptians, now ruled by the [[Mamluk Sultanate (Cairo)|Mamluk sultanate]], besieged Jaffa in 1256 in response. John defeated them, and afterwards gave up the bailliage to his cousin [[John of Arsuf]].{{Sfn|Edbury|1991|pp=81–85}}

=== War of Saint Sabas ===
In 1256 the commercial rivalry between the Venetian and Genoese merchant colonies [[War of Saint Sabas|broke out into open warfare]]. In Acre, the two colonies disputed possession of the [[monastery of Saint Sabas]]. The Genoese, assisted by the Pisan merchants, attacked the Venetian quarter and burned their ships, but the Venetians drove them out. The Venetians were then expelled from Tyre by Philip of Monfort. John of Arsuf, John of Jaffa, [[John II of Beirut]], the Templars, and the Teutonic Knights supported the Venetians, who also convinced the Pisans to join them, while the Hospitallers supported the Genoese. In 1257 the Venetians conquered the monastery and destroyed its fortifications, although they were unable to expel the Genoese completely. They blockaded the Genoese quarter, but the Genoese were supplied by the Hospitallers, whose complex was nearby, and by Philip of Montfort who sent food from Tyre. In August 1257, John of Arsuf tried to end the war by granting commercial rights in Acre to the [[Republic of Ancona]], an Italian ally of Genoa, but aside from Philip of Montfort and the Hospitallers, the rest of the nobles continued to support Venice. In June 1258, Philip and the Hospitallers marched on Acre while a Genoese fleet attacked the city by sea. The naval battle was won by Venice, and the Genoese were forced to abandon their quarter and flee to Tyre with Philip. The war also spread to Tripoli and Antioch, where the [[Embriaco family]], descended from Genoese crusaders, was pitted against [[Bohemond VI of Antioch]], who supported the Venetians. In 1261 the Patriarch, [[Pope Urban IV|Jacques Pantaleon]], organised a council to re-establish order in the kingdom, though the Genoese did not return to Acre.<ref>Steven Runciman, "The Crusader States, 1243–1291", in History of the Crusades, vol. 2, pp. 568–570.</ref>

=== Mongols ===
It was during this period that the Mongols arrived in the Near East. Their presence further east had already displaced the Khwarazmians, and emissaries had been sent by various popes as well as Louis IX to ally or negotiate with them, but they were [[Franco-Mongol alliance|uninterested in alliances]]. They [[Siege of Baghdad (1258)|sacked Baghdad]] in 1258, [[Siege of Aleppo (1260)|and Aleppo]] and Damascus in 1260, destroying both the Abbasid caliphate and the last vestiges of the Ayyubid dynasty. [[Hethum I, King of Armenia|Hethum I of Armenia]] and Bohemond VI of Antioch had already submitted to the Mongols as vassals. Some of the Mongols were Nestorian Christians, including [[Kitbuqa]], one of the generals at the sieges of Baghdad and Damascus, but despite this, the nobles of Acre refused to submit. As the kingdom was by now a relatively unimportant state, the Mongols paid little attention to it, but there were a few skirmishes in 1260: the forces of [[Julian Grenier|Julian of Sidon]] killed the nephew of Kitbuqa, who responded by sacking Sidon, and John II of Beirut was also captured by the Mongols during another raid. The apparently inevitable Mongol conquest was stalled when [[Hulagu Khan|Hulagu]], the Mongol commander in Syria, returned home after the death of his brother [[Möngke Khan]], leaving Kitbuqa with a small garrison. The Mamluks of Egypt then sought, and were granted, permission to advance through Frankish territory, and defeated the Mongols at the [[Battle of Ain Jalut]] in September 1260. Kitbuqa was killed and all of Syria fell under Mamluk control. On the way back to Egypt, the Mamluk sultan [[Qutuz]] was assassinated by the general Baibars, who was far less favourable than his predecessor to alliances with the Franks.<ref>Runciman, "The Crusader States, 1243–1291", pp. 570–575.</ref>

=== Fall of Acre ===
{{main|Fall of Outremer}}
John of Arsuf had died in 1258 and was replaced as ''bailli'' by Geoffrey of Sergines, Louis IX's lieutenant in Acre. Plaisance died in 1261, but as her son Hugh II was still underage, Cyprus passed to his cousin [[Hugh III of Cyprus|Hugh of Antioch-Lusignan]], whose mother [[Isabella of Cyprus]], Alice of Champagne and Hugh I of Cyprus' daughter and Hugh II's aunt, took over the regency in Acre. She appointed, as ''bailli'', her husband [[Henry of Antioch]] (who was also Plaisance's uncle), but died in 1264. The regency in Acre was then claimed by Hugh of Antioch-Lusignan and his cousin [[Hugh of Brienne]], and Hugh II died in 1267 before he reached the age of majority. Hugh of Antioch-Lusignan won the dispute and succeeded Hugh II on Cyprus as Hugh III. When Conradin was executed in Sicily in 1268, there was no other Hohenstaufen heir to succeed him, and Hugh III inherited the Kingdom of Jerusalem as well in 1269. This was disputed by another branch of the Lusignan family: [[Maria of Antioch]], daughter of Bohemond IV of Antioch and [[Melisende of Lusignan]] (herself a daughter of Isabella I and Amalric II), claimed the throne as the oldest living relative of Isabella I, but for the moment her claim was ignored. By this time, the Mamluks under Baibars were taking advantage of the kingdom's constant disputes, and began conquering the remaining crusader cities along the coast. In 1265, Baibars took Caesarea, Haifa and Arsuf, and Safad and Toron in 1266. In 1268 he captured Jaffa and Beaufort, and then [[Siege of Antioch (1268)|besieged and destroyed Antioch]].{{Sfn|Edbury|1991|pp=85–90}}

[[File:Krak des Chevaliers 01.jpg|thumb|[[Krak des Chevaliers]], Syria. [[UNESCO World Heritage Site]]]]
Hugh III and Baibars made a one-year truce after these conquests; Baibars knew that Louis IX was planning another crusade from Europe, and assumed that the target would once again be Egypt. But instead the crusade was diverted to [[Tunis]], where Louis died. Baibars was free to continue his campaigns: in 1270 he had the Assassins kill Philip of Montfort, and in 1271 he captured the Hospitaller and Teutonic Knights strongholds of Krak des Chevaliers and Montfort Castle. He also [[Siege of Tripoli (1271)|besieged Tripoli]], but abandoned it in May when [[Edward I of England|Prince Edward of England]] arrived, the only part of Louis IX's crusade to arrive in the east. Edward could do nothing except arrange a ten-year truce with Baibars, who nevertheless attempted to have him assassinated as well. Edward left in 1272, and despite the [[Second Council of Lyon]]'s plans for another crusade in 1274, no further large-scale expedition ever arrived. Hugh III's authority on the mainland began to break down; he was an unpopular king, and Beirut, the only territory left outside of Acre and Tyre, started to act independently. Its heiress, [[Isabella of Beirut|Isabella of Ibelin]] (widow of Hugh II), actually placed it under Baibars' protection. Finding the mainland ungovernable, Hugh III left for Cyprus, leaving [[Balian of Arsuf]] as ''bailli''. Then in 1277, Maria of Antioch sold her claim to the kingdom to Charles of Anjou, who sent [[Roger of San Severino]] to represent him. The Venetians and Templars supported the claim, and Balian was powerless to oppose him. Baibars died in 1277 and was succeeded by [[Qalawun]]. In 1281 the ten-year truce expired and was renewed by Roger. Roger returned to Europe after the [[Sicilian Vespers]] in 1282, and was replaced by [[Odo Poilechien]]. Hugh III attempted to re-assert his authority on the mainland by landing at Beirut in 1283, but this was ineffective and he died in Tyre in 1284. He was succeeded briefly by his son [[John I of Cyprus|John II]], who died soon after in 1285, and was succeeded by his brother, Hugh III's other son [[Henry II of Jerusalem|Henry II]]. That year Qalawun captured the Hospitaller fortress of [[Marqab]]. Charles of Anjou also died in 1285, and the military orders and the commune of Acre accepted Henry II as king; Odo Poilechen refused to recognize him, but was allowed to hand Acre over to the Templars rather than Henry directly, and the Templars then handed it to the king. War broke out between the Venetians and Genoese again in 1287, and [[Siege of Tripoli (1289)|Tripoli fell]] to Qalawun in 1289. Although it was only a matter of time before Acre also fell, the end of the crusader kingdom was actually instigated in 1290 by newly arrived Crusaders, who rioted in Acre and attacked the city's Muslim merchants. Qalawun died before he could retaliate, but his son [[al-Ashraf Khalil]] arrived to [[Siege of Acre (1291)|besiege Acre]] in April 1291. Acre was defended by Henry II's brother [[Amalric of Tyre]], the Hospitallers, Templars, and Teutonic Knights, the Venetians and Pisans, the French garrison led by [[Jean I de Grailly]], and the English garrison led by [[Otton de Grandson]], but they were vastly outnumbered. Henry II himself arrived in May during the siege, but the city fell on May 18. Henry, Amalric, Otton, and Jean escaped, as did a young Templar named [[Roger de Flor]], but most of the other defenders did not, including the master of the Templars [[Guillaume de Beaujeu]]. Tyre fell without a fight the next day, Sidon fell in June, and Beirut in July.{{Sfn|Edbury|1991|pp=92–99}}

The Crusaders moved their headquarters north to cities such as Tortosa, but lost that too, and were forced to relocate their headquarters offshore to Cyprus. Some naval raids and attempts to retake territory were made over the next ten years, but with the loss of the island of [[Siege of Ruad|Arwad]] in 1302–1303, the Kingdom of Jerusalem ceased to exist on the mainland.