formerly 25 October
Son of the presbyter Jocundus. Priest, apparently having been ordained by Pope Saint Damasus I. Papal legate to Constantinople c.405 for Pope Saint Innocent I. 42nd pope in 418. He was opposed by anti-pope Eulalius who had the support of the minor clergy. Both were exiled from Rome by Emperor Honorius in order to keep the peace. At Easter Eulalia returned against orders, causing his followers to rise to violent action; he was exiled again, and Boniface declared pope. Repeatedly opposed by the patriarch of Constantinople who sought to increase his sphere of influence. Staunch opponent of Pelagianism. Saint Augustine of Hippo dedicated several works to him.
c.350 at Rome, Italy
28 December 418
4 September 422 at Rome, Italy of natural causes; buried in the cemetery of Maximus on the Via Salaria, Rome