The death of Aimery brought about the separation of the crowns of Cyprus and Jerusalem, which were not to be reunited until the reign of Hugh III, in 1268. For the latter Kingdom the Haute Cour selected, as Regent for Isabel and her daughter Mary by Conrad of Montferrat, John d'Ibelin, the ‘Old Lord of Beirut’, half-brother of the Queen. But Isabel died very soon after, before May 1206, and John continued as Regent for Mary, until the princess was married to John de Brienne in 1210.

But, for Cyprus, Aimery's heir was his son by Échive d'Ibelin, a boy often years. For the five years which would have to pass before he would reach his majority, it was necessary to appoint a Regent to administer the realm; and this Regent, according to the law, must be the prince's nearest relation on that side of the family through which the throne escheated. The actual custody of the minor's person should, on the other hand, fall to the nearest relation on the other side of the family, lest the Regent should be tempted to make away with his charge, who stood between him and the throne. On this occasion, there was a breach of the latter rule. The Regent, Walter de Montbéliard (Mümpelgard), Constable of Jerusalem, and husband of Hugh's elder sister Bourgogne, demanded, in addition to the regency of the Kingdom, the guardianship of the prince, which the Haute Cour weakly assigned to him.