orig. Cencio Savelli
born Rome
died March 18, 1227, Rome
Pope (1216–27).
He extended Innocent III 's policies on church reform and the recovery of the Holy Land, proclaiming a Crusade to regain Jerusalem in 1216 (see Crusades ). He crowned Frederick II as Holy Roman emperor (1220) but threatened to excommunicate him if he failed to join the Crusade. Honorius also undertook a Crusade against the Moors in Spain (1218) and settled the Barons' War in England (1223). He continued the Albigensian Crusade against the heretics of southern France. He approved the Dominican , Franciscan , and Carmelite orders and authorized the first official book of canon law.