Pope Gregory IX (r. 1227–1241) created sixteen cardinals in five consistories that he held throughout his pontificate. This included three future successors (Celestine IV, Innocent IV, and Alexander IV) in the first allocation in 1227.
18 September 1227 Jean Halgrin O.S.B. Clun. Goffredo Castiglioni Rinaldo Conti di Segni Sinibaldo Fieschi Barthélemy Otto of Tonengo
December 1228 Jacques de Vitry Can. Reg. O.S.A. Niccolò dei Conti di Segni
September 1231 Giacomo da Pecorara O.Cist. Simon de Sully Raymond de Pons
1237 Riccardo Annibaldi François Cassard Guy
1239 Robert Somercotes St. Ramón Nonato O. de M.
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