Editing Eighth Crusade (section)

===Regency of Cyprus and Jerusalem===
Plaisance died in September 1261. Her son [[Hugh II of Cyprus]], then eight years old but with claims to the thrones of Cyprus and Jerusalem, required a regent. Hugh II's father [[Henry I of Cyprus]] had had two sisters. The eldest was [[Mary of Lusignan, Countess of Brienne|Marie of Lusignan]] who had married [[Walter IV of Brienne]], dying young and leaving a son [[Hugh of Brienne]]. The younger, [[Isabella of Cyprus]], was married to [[Henry of Antioch]], brother of [[Bohemond V of Antioch]]. Their son [[Hugh III of Cyprus]], was older than his cousin, and Isabella had raised both. Hugh of Brienne, though next heir to the throne, was unwilling to compete against his aunt and her son for the regency. After some deliberation, the High Court of Cyprus appointed Hugh III as regent. The [[High Court of Jerusalem|Haute Cour]] was given more time to consider the matter, and it was not until the spring of 1263 that Isabella came with her husband to Acre. She was accepted as regent ''de facto,'' but they refused to give her an oath of allegiance. That could only be done if Conradin were present. Geoffrey of Sargines resigned the office of ''bailli,'' which Isabella then gave to her husband, and she returned without him to Cyprus.{{sfn|Runciman|1954|pp=288–289|loc=Hugh of Cyprus, Regent of Jerusalem}}

Isabella died in Cyprus in 1264 and the regency of Jerusalem was again vacant. Hugh III of Cyprus claimed it but a counterclaim was now put in by Hugh of Brienne. He argued that the custom of France that claim of the son of an elder sister took precedence over the son of a younger, no matter which cousin was older. The jurists of Outremer rejected this argument and ruled that the decisive factor was kinship to the last holder of the office. As Isabella had been accepted as the last regent, her son Hugh III took precedence over her nephew. The nobles and high officers of state unanimously accepted him and provided the homage that had been denied to his mother. Importantly, Hugh III was recognized by [[Hugues de Revel]] and [[Thomas Bérard]], the Grand Masters of the Hospital and the Temple. He did not appoint a formal ''bailli,'' but the government of Acre was entrusted once more to Geoffrey of Sargines.{{sfn|Runciman|1954|pp=289–290|loc=Hugh III of Cyprus}}