Quintus Septimius Florens Tertullian (c. 160- c. 220) was born in Carthage, North Africa. He studied law as a young man. In about 195 he converted to Christianity and spent the rest of his life utilizing his skills as a rhetorician to defend the faith against pagan philosophies and heresies.
Thascius Caecilius Cyprian (c. 200-258) was the son of a wealthy Roman officer. He led a privileged life as a young man and received an excellent education. As an adult he became a Christian and turned his back on his family’s affluence to embrace the study of the Scriptures and asceticism.
Aurelius Augustine (354-430) was one of the church’s great theologians. Augustine converted to Christianity at the age of 33 due largely to the influence of his devout mother, Monica.