– Pope Celestine IV was born in Milan.
1219 – He became chancellor of the church of Milan.
1227 – Pope Gregory IX made him a cardinal on the 18th of September with the cure of San Marco.
1228–1229 – He was sent as legate in Lombardy and Tuscany, where the cities and communes had generally remained true to the Hohenstaufen emperor, Frederick II, in an attempt to bring them around to the curial side, without success.
1238 – He was made cardinal bishop of Santa Sabina.
1241 – He died on the 10th of November in Rome.