Augustine (354-430) was born in North Africa and spent most of his life in several cities there. In addition, he spent 5 very significant years (383-388) in Rome and Milan. The prayers and Christian witness of Augustine's mother, St. Monica, had a great impact on him. St. Ambrose of Milan was another important Christian influence. After his conversion and Christian baptism at Milan, Augustine returned to North Africa where he led a monastic life. He was ordained, and in 395, he was consecrated bishop. He served as a faithful bishop for the rest of his life, and he died while the Vandals were besieging the city of Hippo.
Augustine of Hippo has traditionally been honored as one of the four ancient Latin doctors (from the Latin root, doceo, "teach") of the universal Church. Of the four of these teachers, Augustine has had the most widespread and long-lasting influence among Western Christians whether Catholic or Protestant.Augustine's two most famous works are The Confessions, a spiritual autobiography, and The City of God, a Christian philosophy of history, but he also wrote essays, letters, manuals, and sermons. His theology, especially on themes such as faith, grace, and the Sacraments, had a great influence on Anglican Books of Common Prayer and the Thirty-nine Articles.