Editing Ladislaus the Posthumous (section)

===Inheritance and civil war===
<!--- [[File:304König Albrecht II.jpg|thumb|right|alt=A crowned man with a moustache and blonde crowned lady on their knees, surrounded by other men and women on their knees |Ladislaus's parents, [[Albert II of Germany|Albert of Habsburg]] and [[Elizabeth of Luxembourg]] pray]]--->

The Estates of the [[Duchy of Austria]] acknowledged Ladislaus' right to rule and made Frederick of Austria, who had been elected [[King of the Romans]], regent in accordance with the last will of Ladislaus' father.{{sfn|Beller|2006|p=34}}{{sfn|Pálosfalvi|2002|p=143}} In Bohemia, only the Catholic lords, who were under the leadership of [[Ulrich II of Rosenberg]],{{sfn|Šmahel|2011|p=164}} were willing to accept Ladislaus' hereditary right to rule.{{sfn|Pálosfalvi|2002|p=143}} Soon after the birth of her son, Queen Elizabeth sent envoys to Poland to persuade the delegates of the Hungarian Estates to break off their negotiations with Vladislaus III of Poland.{{sfn|Pálosfalvi|2002|p=143}} However, the Hungarian lords refused and elected Vladislaus king on 8 March 1440.{{sfn|Solymosi|Körmendi|1981|p=257}}{{sfn|Bartl|Čičaj|Kohútova|Letz|2002|p=48}} Before his election, Vladislaus had pledged that he would marry Queen Elizabeth and protect her infant son's interests in Austria and Bohemia.{{sfn|Solymosi|Körmendi|1981|p=257}}

The queen refused to give her consent to the project and decided to have her son crowned king before Vladislaus came to Hungary.{{sfn|Pálosfalvi|2002|p=141}} She hastily took Ladislaus from Komárom to [[Székesfehérvár]], which was the traditional place of the [[coronation of the Hungarian monarch|royal coronations in Hungary]].{{sfn|Pálosfalvi|2002|p=141}} After a young lord, [[Nicholas Újlaki]], symbolically knighted the infant Ladislaus, Archbishop Dénes Szécsi [[anointed]] and crowned him king on 15 May.{{sfn|Pálosfalvi|2002|p=141}} During the lengthy ceremonies, his mother's cousin, [[Ulrich II, Count of Celje]], held the crown over the head of Ladislaus who burst into tears while the coronation oath was being read out on his behalf.{{sfn|Pálosfalvi|2002|p=141}} Six days later Vladislaus III entered [[Buda]].{{sfn|Solymosi|Körmendi|1981|p=260}} Queen Elizabeth fled first to [[Győr]], and from there to [[Sopron]], taking the infant king with her.{{sfn|Pálosfalvi|2002|p=142}}

The most powerful lords{{spaced ndash}}including [[Ladislaus Garai]], [[Đurađ Branković]], [[Frederick II, Count of Celje|Frederick II]] and Ulrich II of Celje{{spaced ndash}} and most towns remained faithful to the child-king, but most noblemen preferred Vladislaus' rule in the hope that he would be able to lead the defence of the kingdom against the Ottomans.{{sfn|Engel|2001|pp=281–282}}{{sfn|Kontler|1999|p=113}} A civil war broke out between the partisans of the two kings which would last for years.{{sfn|Solymosi|Körmendi|1981|p=260}} The [[Diet of Hungary|Diet]] declared Ladislaus' coronation invalid on 29 June 1440, stating that "the crowning of kings is always dependent on the will of the kingdom's inhabitants, in whose consent both the effectiveness and the force of the crown reside".{{sfn|Engel|2001|p=281}}{{sfn|Kontler|1999|p=113}} On 17 July, Archbishop Dénes Szécsi crowned Vladislaus king with a crown taken from the tomb of [[Stephen I of Hungary|King Saint Stephen]], the first king of Hungary.{{sfn|Engel|2001|p=281}}{{sfn|Bartl|Čičaj|Kohútova|Letz|2002|p=48}}

In need of financial resources to continue the war against Vladislaus, Queen Elizabeth signed a treaty with Frederick III, King of the Romans, in [[Wiener Neustadt]] on 22 November.{{sfn|Engel|2001|p=282}}{{sfn|Solymosi|Körmendi|1981|p=260}} She not only mortgaged Sopron to Frederick III, but also appointed him as her son's guardian and gave the Holy Crown of Hungary to him.{{sfn|Engel|2001|p=142}} Thereafter Ladislaus lived in Frederick III's court, mainly in Wiener Neustatdt.{{sfn|Tringli|2012|p=138}}

Queen Elizabeth hired a Czech [[condottiere]], [[John Jiskra of Brandýs]], who took control of [[Košice|Kassa]] (now Košice in Slovakia) and a dozen other towns in [[Upper Hungary]] during the next months.{{sfn|Engel|2001|p=282}}{{sfn|Spiesz|Caplovic|Bolchazy|2006|p=54}} However, Vladislaus' two military commanders, Nicholas Újlaki and [[John Hunyadi]], defeated the united army of the child Ladislaus's supporters from the central and southern parts of Hungary in the [[Battle of Bátaszék]] in early 1441.{{sfn|Solymosi|Körmendi|1981|p=260}}{{sfn|Bak|1994|p=63}}{{sfn|Engel|2001|p=282}} During the next months, Vladislaus and his commanders took control of the western and eastern territories of Hungary, but Jiskra and Queen Elizabeth's other supporters continued to control Upper Hungary, along with [[Esztergom]], Győr, [[Pressburg]] (now Bratislava in Slovakia) and other important towns.{{sfn|Engel|2001|pp=282–283}} Negotiations began and Queen Elizabeth and Vladislaus signed a peace treaty in Győr on 13 December 1442.{{sfn|Bartl|Čičaj|Kohútova|Letz|2002|p=49}}{{sfn|Solymosi|Körmendi|1981|p=262}} The queen recognized Vladislaus as king, but preserved her son's claim to the throne.{{sfn|Bartl|Čičaj|Kohútova|Letz|2002|p=49}}{{sfn|Solymosi|Körmendi|1981|p=262}} Three or four days later the queen suddenly died and Ladislaus became an orphan before his third birthday.{{sfn|Pálosfalvi|2002|p=143}}{{sfn|Bartl|Čičaj|Kohútova|Letz|2002|p=49}}{{sfn|Engel|2001|p=283}}