Church History by Eusebius Pamphilius
Chapter XXII.--The Bishops that were well known at this Time.
In the tenth year of the reign of Commodus, Victor succeeded Eleutherus, the latter having held the episcopate for thirteen years. In the same year, after Julian had completed his tenth year, Demetrius received the charge of the parishes at Alexandria. At this time the above-mentioned Serapion, the eighth from the apostles, was still well known as bishop of the church at Antioch. Theophilus presided at Cæsarea in Palestine; and Narcissus, whom we have mentioned before, still had charge of the church at Jerusalem. Bacchylus at the same time was bishop of Corinth in Greece, and Polycrates of the parish of Ephesus. And besides these a multitude of others, as is likely, were then prominent. But we have given the names of those alone, the soundness of whose faith has come down to us in writing.