Constantine I

Attested. The reign, the summons, and the exiles are certain. The vision before the Milvian Bridge is reported in conflicting versions. Who first suggested homoousios is disputed.

Constantine won the West in 312 and the whole empire in 324. He summoned Nicaea because a divided church was a public problem. He was not a bishop and did not vote. Eusebius of Caesarea says the emperor proposed homoousios; many historians think Ossius advised him, and the letter is not an independent record. Constantine exiled Arius, Secundus, and Theonas, and a few months later exiled Eusebius of Nicomedia and Theognis. In 335, after Tyre, he banished Athanasius to Trier. He was baptized on his deathbed in 337 by Eusebius of Nicomedia, not by Eusebius of Caesarea.

Show a related place on the map