Eusebius – Ecclesiastical History – a.k.a., “Church History” by Pamphili Eusebius

“The Ecclesiastical History of Eusebius Pamphilus, Bishop of Cæsarea, in Palestine”—or simply “Church History”—is a series of ten books that contain the history of early Christianity from the 1^st century (basically where Acts and the Epistles left off) to the 4^th century (when it was written).