King of the Two Sicilies, son of the Emperor Frederick II., who had to struggle for his birthright with three Popes, Innocent IV., Alexander IV., and Urban IV., the last of whom having excommunicated him, as his predecessors had done, and bestowed his dominions on Charles of Anjou, in conflict with whom at Benevento he fell, and who denied him Christian burial, though his nobles pled with him to grant it (1231-1266).