Contemporary biography of the Emperor Constantine I (born c. 272, died 337), who consolidated the Roman Empire, brought an end to the era of Roman persecution of the Catholic Church, hosted the First Ecumenical Council, and became the first Christian Roman Emperor. Image links to Richardson translation. ISBN recommendation: 0-19-814924-7
![Eusebii Pamphili Ecclesiastiae historae libri decem: eiusdem de vita Imp. Constantini, libri IV: quibus subjicitur oratio Constantini ad sanctos, & Panegyricus Eusebii Henricus Valesius Graecum textum collatis IV.Mss. Codicibus emendavit, latine vertit & adnotationibus illustravit. Parisiis [Paris]: Excudebat Antonius Vitre, 1659.](https://i0.wp.com/libriaurei.net/wp-content/uploads/2012/07/eusebii-liber.jpg?resize=400%2C349&ssl=1)
Eusebius is considered the Father of Church History. Completed around 325 A.D., his Ecclesiastical History provides an ancient comprehensive narrative of the prevalent Christian historical traditions from the Incarnation of Christ to Constantine’s defeat of Licinius (c. 325). Image links to McGiffert translation. ISBN recommendations: 978-0-8132-1445-0, 978-0-8132-1446-7