In 1213 Pope Innocent III's papal bull "Quia maior" called for all of Christendom to lead a new (Fifth) crusade. This strengthened the support of sultan al-Adil I, an Ayyubid-Egyptian general who supported Raymond-Roupen's claims in Antioch. In 1216 Leo installed Raymond-Roupen as prince of Antioch, and ending all military aspect of the struggle between Tripoli and Lesser Armenia, but the citizens again revolted against Raymond-Roupen in c. 1219 and Bohemond of Tripoli was recognised as the fourth prince of that name. Bohemond IV and his son Bohemond V remained neutral in the struggles of the Guelphs and Ghibellines to the south which arose when Frederich II married Isabella II, and in 1233 Bohemond IV died.