Back to Ancient History Sourcebook | Ancient History Sourcebook: Procopius of Caesarea: Alaric's Sack of Rome, 410 CE History of the Wars , III.ii.7-39 But the Visigoths, separating from the others, removed from there and at first entered into an alliance with the Emperor Arcadius, but at a later time (for faith with the Romans cannot dwell in barbarians), under the leadership of Alaric, they ...