<P> Those fathers who wrote in Latin are called the Latin (Church) Fathers . These include Tertullian (who later in life converted to Montanism), Cyprian of Carthage, Gregory the Great, Augustine of Hippo, Ambrose of Milan, and Jerome . </P> <P> Saint Jerome is best known as the translator of the Bible from Greek and Hebrew into Latin . He also was a Christian apologist . Jerome's edition of the Bible, the Vulgate, is still an important text of the Roman Catholic Church . He is recognised by the Roman Catholic Church as a Doctor of the Church . </P> <P> Saint Augustine, Bishop of Hippo Regius, was a philosopher and theologian . Augustine is one of the most important figures in the development of Western Christianity . Augustine was radically influenced by Platonism . He framed the concepts of original sin and just war as they are understood in the West . When Rome fell and the faith of many Christians was shaken, Augustine developed the concept of the Church as a spiritual City of God, distinct from the material City of Man . Augustine's work defined the start of the medieval worldview, an outlook that was later firmly established by Pope Gregory the Great . </P> <P> Augustine was born in present - day Algeria to a Christian mother, Saint Monica . He was educated in North Africa and resisted his mother's pleas to become Christian . He took a concubine and became a Manichean . He later converted to Christianity, became a bishop, and opposed heresies, such as the belief that people can deserve salvation by being good . His works--including The Confessions, which is often called the first Western autobiography--are still read around the world . In addition he believed in Papal supremacy . </P>

Who is considered the most important person in the early spread of christianity