The original authorities are Ammianus Marcellinus, Zosimus, Sozomen, Socrates, orations of Gregory Nazianzen, Theodoret, the Theodosian Code, Sulpicius Severus, Life of Martin of Tours, Life of Ambrose by Paulinus, Augustine’s “De Civitate Dei,” Epistles of Ambrose; also those of Jerome; Claudien. The best modern authorities are Tillemont’s History of the Emperors; Gibbon’s Decline and Fall; Milmans’s History of Christianity; Neander; Sheppard’s Fall of Rome; and Flécier’s Life of Theodosius. There are several popular Lives of Theodosius in French, but very few in English.
