Eusebius of Caesarea (c. 263 – 339) also called Eusebius Pamphili, is a Roman historian, exegete and Christian polemicist.

He becomes the Bishop of Caesarea in Palestine about the year 314.

Together with Pamphilus, he is a scholar of the Biblical canon.

He writs Demonstrations of the Gospel, Preparations for the Gospel, and On Discrepancies between the Gospels, studies of the Biblical text.

As "Father of Church History" he produces the Ecclesiastical History, On the Life of Pamphilus, the Chronicle and On the Martyrs.