Eusebius of Caesarea, known as the Father of Church History c.264-340AD
Palestinian theologian and scholar

Born probably in Palestine, he became Bishop of Caesarea (c.313AD), and in the Council of Nicaea was the head of the semi-Arian or moderate party, which was averse to discussing the nature of the Trinity. His Chronicon, a history of the world to 325, contains extracts from lost works. His Praeparatio Evangelica is a collection of such statements in heathen authors as support the evidences of Christianity, and its complement is the Demonstratio Evangelica in 20 books, 10 of which are extant, intended to convince the Jews of the truth of Christianity from their own scriptures. His most important work, the Ecclesiastical History, is a record of the chief events in the Christian Church down to 324. Other works include the Theophania (discovered in 1839), and a life of Constantine I, the Great.