Eusebius (
c.260–
c.340). Bishop of Caesarea in Palestine and church historian. Eusebius's most important work was the
Ecclesiastical History, containing an immense range of material, including many extracts from earlier writers, about the Church from the beginning to his own time. Among his other historical works are a
Chronicle, containing tables synchronizing events in ancient history; a
Life of Constantine, to whom he was theological advisor; and an account of the
Martyrs of Palestine in the persecution of 303–10. His most important theological writings are the two apologetic works,
Preparation for the Gospel (refuting Greek polytheism) and
Demonstration of the Gospel (proving Christianity from the Old Testament).