Editing Charles II of Naples (section)

===Negotiations===

Charles left Southern Italy to start new negotiations with Philip IV.{{sfn|Runciman|1958|p=267}} Before visiting Paris, he went to the Aragonese frontier to offer himself for imprisonment on 1 November in accordance with the treaty of Canfranc, but nobody came to arrest him.{{sfn|Bárány|2010|p=74}} Charles and Philip IV signed a treaty at Senlis on 19 May 1290.{{sfn|Runciman|1958|p=267}} Charles gave his daughter, [[Margaret, Countess of Anjou|Margaret]], in marriage to Charles of Valois, giving Anjou and Maine to him as her dowry in return for his promise to abandon his claim to Aragon with the pope's consent.{{sfn|Runciman|1958|p=267}}{{sfn|Bárány|2010|p=75}} Philip IV also promised that he would make peace with Aragon as soon as Alfonso III and the Holy See were reconciled.{{sfn|Runciman|1958|p=267}}{{sfn|Bárány|2010|p=75}}

The envoys of all parties, but James of Sicily, started negotiations with the mediation of English delegates at [[Perpignan]], and continued them in [[Tarascon]] in late 1290 and early 1291.{{sfn|Runciman|1958|p=267}}{{sfn|Bárány|2010|p=75}} They reached a compromise which was included in a treaty in Brignoles on 19 February 1291.{{sfn|Runciman|1958|p=267}}{{sfn|Bárány|2010|p=75}} The document confirmed most terms of the treaty of Senlis and restored the peace between Alfonso III, Philip IV and Charles.{{sfn|Runciman|1958|p=267}} Charles received the districts of [[Avignon]] held by the French monarch.{{sfn|Runciman|1958|p=267}} The Holy See also accepted the terms of the treaty because Alfonso of Aragon promised that he would lead a crusade against the [[Mamluks of Egypt]].{{sfn|Housley|1982|pp=78, 92–93}}

The treaty of Brignoles deprived Alfonso's brother, James of Sicily, of Aragonese support, but Alfonso unexpectedly died on 18 June.{{sfn|Runciman|1958|p=268}}{{sfn|Housley|1982|p=93}} James succeeded Alfonso in Aragon, but he did not want to cede the island of Sicily and Calabria to Charles and made his younger brother, [[Frederick III of Sicily|Frederick]], his lieutenant.{{sfn|Runciman|1958|p=268}} The Mamluks occupied the last strongholds in the Kingdom of Jerusalem in the summer of 1291.{{sfn|Lock|2006|p=122}} Pope Nicholas IV called for a new crusade and urged the Christian "kings, princes and prelates" to send their [[Recovery of the Holy Land|proposals about the recovery of the Holy Land]].{{sfn|Lock|2006|p=122}}{{sfn|Housley|1984|p=530}} Charles was the only monarch to answer the pope.{{sfn|Housley|1984|p=530}} He suggested that the sole grand master of the united military orders, who should be appointed from about the royal princes, was to rule the reconquered Kingdom of Jerusalem.{{sfn|Housley|1984|p=530}}

After realising that his new subjects would not support a war for Sicily, James sent envoys to Rome to start negotiations about his submission shortly before Pope Nicholas died on 4 April 1292.{{sfn|Runciman|1958|p=268}} Charles was also willing to reach a compromise, because he wanted to secure Hungary for his family.{{sfn|Runciman|1958|p=269}} Charles's brother-in-law, Ladislaus IV of Hungary, had been murdered on 10 July 1290.{{sfn|Runciman|1958|p=269}}{{sfn|Engel|2001|p=109}} The Hungarian noblemen elected Ladislaus' cousin, [[Andrew III of Hungary|Andrew III]], king, although Andrew's legitimacy was doubtful.{{sfn|Engel|2001|p=110}} Charles's wife regarded herself Ladislaus' lawful heir.{{sfn|Engel|2001|p=110}} Claiming that Hungary was the fief of the Holy See, Pope Nicholas IV granted Hungary to her son, Charles Martel, in 1292.{{sfn|Fine|1994|p=207}} The most powerful noblemen in [[Croatia in union with Hungary|Croatia]] and [[Slavonia]]{{mdash}}two realms ruled by the kings of Hungary{{mdash}}accepted the pope's decision.{{sfn|Fine|1994|p=207}} Charles made donations to them to secure their support, but Charles Martel could never assert his claim.{{sfn|Fine|1994|p=208}}

The death of Pope Nicholas IV gave rise to a prolonged interregnum.{{sfn|Runciman|1958|p=269}} Charles continued the negotiations with James with the mediation of [[Sancho IV of Castile]].{{sfn|Runciman|1958|p=269}} An agreement was completed in Figueras in late 1293.{{sfn|Runciman|1958|p=269}} James agreed to give up Sicily in return for a compensation.{{sfn|Runciman|1958|p=269}} To put an end to the interregnum in Rome, Charles persuaded the cardinals to elect [[Peter of Morrone]]{{mdash}}a hermit who had been known for his apocalyptic visions{{mdash}}pope.{{sfn|Runciman|1958|p=269}} Being grateful to Charles, Pope Celestine V granted him Church revenues from France, the Holy Roman Empire and England to finance a new military campaign against Sicily.{{sfn|Housley|1982|p=176}} After Celestine abdicated in December 1294, the cardinals elected [[Pope Boniface VIII|Benedetto Caetani]] pope.{{sfn|Runciman|1958|p=270}} Pope Boniface VIII was determined to put an end to the war, because he wanted to declare a new crusade for the reconquest of the Holy Land.{{sfn|Housley|1982|p=93}}