Bp. of Rome from 417. His pontificate was marked by blunders. Having reopened the case of Pelagius and his supporters, he was forced by an Imperial edict to come into line with the views of St Augustine and the African Church and condemn Pelagianism. He was again outmanoeuvred when, citing as Nicene a canon which belonged to the Council of Sardica, he tried to quash the sentence passed on Apiarius by the Bp. of Sicca. Feast day, 26 Dec.