Aurelius Augustinus was born in 354 in Tagaste to a Christian mother and a Pagan father, raised in Roman north Africa, educated in Carthage, and employed as a professor of rhetoric in Milan by 383. He followed the [[Manichaeism|Manichaean]] religion in his student days, and was converted to Christianity by the preaching and example of [[Ambrose of Milan]]. He was [[
baptize]] d at Easter in 387, and returned to north Africa and created a monastic foundation at Tagaste for himself and a group of friends. In 391 he was [[ ordain]] ed a [[priest]] in Hippo Regius (now Annaba, in Algeria). He became a famous preacher (more than 350 preserved sermons are believed to be authentic), and was noted for combatting the Manichaean heresy.
In 396 he was made coadjutor [[bishop]] of Hippo (assistant with the right of succession on the death of the current bishop), and remained as bishop in Hippo until his death in 430. He left his [[monastery]], but continued to lead a monastic life in the episcopal residence. He left a Rule (''Regula'' in Latin) for his monastery that has led him to be designated the "patron saint of Regular Clergy," that is, parish clergy who live by a monastic rule.