In 313, Constantine the Great, the first Christian emperor, issued the Edict of Milan along with Licinius that granted freedom in the worship of Christianity. In 330, he established a second capital in Byzantium, which he renamed Constantinople. For most of the period from 286 to 480, there was more than one recognised senior emperor, with the division usually based in geographic terms. This division was consistently in place after the death of Theodosius I in 395, which historians have dated as the division between the Western Roman Empire and the Eastern Roman Empire. However, formally the Empire remained a single polity, with separate co-emperors in the separate courts. The fall of the Western Roman Empire, and so the end of a separate list of emperors below, is dated either from the date of 476 when Romulus Augustulus was deposed by the Germanic Herulians led by Odoacer or the date of 480, on the death of Julius Nepos, when Eastern emperor Zeno ended recognition of a separate Western court. In the period that followed, the Empire is usually treated by historians as the Byzantine Empire governed by the Byzantine emperors, although this designation is not used universally, and continues to be a subject of specialist debate today.