Spanish canonist. He became a Dominican in 1222. His Summa de casibus poenitentiae profoundly influenced the development of the penitential system. In 1230 Gregory IX charged him with the collection and arrangement of Papal decretals subsequent to Gratian; the work was finished and promulgated in 1234. In 1238 he was elected Master General of his Order; he rearranged the Dominican statutes into the form that they essentially retained until 1924. From 1240 he devoted himself mainly to the conversion of Jews and Moors. Feast day, 7 (formerly 23) Jan.
Subjects: Christianity — Medieval and Renaissance History (500 to 1500).