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.