Pope Honorius III (c. 1150 – 18 March 1227), born Cencio Savelli, was head of the Catholic Church and ruler of the Papal States from 18 July 1216 to his death. A canon at the Basilica di Santa Maria Maggiore, he came to hold a number of important administrative positions, including that of Camerlengo. In 1197, he became tutor to the young Frederick II. As pope, he worked to promote the Fifth Crusade, which had been planned under his predecessor, Innocent III. Honorius repeatedly exhorted King Andrew II of Hungary and Emperor Frederick II to fulfill their vows to participate. He also gave approval to the recently formed Dominican and Franciscan religious orders.