Election of Pope Gregory IX

Date: March 19, 1227 • Location: Rome, Italy

Election of Ugolino di Conti as Pope Gregory IX following the death of Pope Honorius III.

Pope Gregory IX was head of the Catholic Church and the ruler of the Papal States from 19 March 1227 until his death in 1241. He is known for issuing the Decretales and instituting the Papal Inquisition, in response to the failures of the episcopal inquisitions established during the time of Pope Lucius III, by means of the papal bull Ad abolendam, issued in 1184.