Eusebius of Caesarea or Eusebius Pamphili, c.263-339?, Greek apologist and church historian, b. Palestine. He was bishop of Caesarea, Palestine (314?-339). In the controversy over Arianism, Eusebius favored the semi-Arian views of Eusebius of Nicomedia, and he once gave refuge to Arius. A simple baptismal creed submitted by Eusebius at the First Council of Nicaea (325) formed the basis of what became known as the Nicean Creed; it was amended with the Greek word homoousios [consubstantial, of the same substance] to define the Son's relationship with the Father. Eusebius considered this addition to the creed as reflecting the ideas of Sabellius, which he opposed. Although he signed the formulary, he later did not support it. His works include a universal history entitled the Chronicle, the Ecclesiastical History, and the apologetic works Praeparatio Evangelica and Demonstratio Evangelica.