eusebius of caesarea

Letter of Eusebius. (Epistola Eusebii.)
Eusebius writes home to his own church to explain what the Council of Nicaea decided, and why he signed.
The Church History of Eusebius
The first great history of the church, from the apostles to Constantine, quoting documents now lost everywhere else.
The Life of Constantine with Orations of Constantine and Eusebius
An account of the first Christian emperor, with speeches from the emperor and his biographer.

Eusebius of Caesarea

Bishop and historian, whose Church History preserves the memory of the first three Christian centuries.