Pope from 422. His support for Apiarius led a Council at Carthage, c.424, to protest against what the Africans regarded as an infringement of their rights. In 429 he sent Germanus of Auxerre to Britain to combat Pelagianism. At a Roman Synod in 430 he formally condemned Nestorius. Feast day in the E., 8 Apr.; in the W., formerly 6 Apr.; after 1922, 22 July; now suppressed.