Ambrose of Milan, canonized as Saint Ambrose, was a Roman theologian, statesman, preacher, and Bishop of Milan from 374 until his death. Trained in rhetoric and law, he served as Roman civil governor of Aemilia-Liguria at Milan before being unexpectedly chosen as bishop by popular acclamation in 374. His preaching, ecclesiastical activity, and writings made him one of the most influential Christian figures of the 4th century. 339 – April 5, 397; died at about 58. Alive at the same time as Hypatia, Julian, Ausonius, Pappus of Alexandria, and Augustine of Hippo. Wiki link