Eusebius of Caesarea (260–339)

"Father of Church History," author of the Ecclesiastical History. Eusebius of Caesarea, also known as Eusebius Pamphilius, was a historian of Christianity, exegete, and Christian polemicist from the Roman province of Syria Palaestina. In about AD 314 he became the bishop of Caesarea Palaestina.