CECROPIO. - Semi-Arian, bishop first of Laodicea, then transferred to Nicomedia by the emperor Constantius in 351. Judged severely by s. Athanasius for having secured his elevation through plots and calumnies against the orthodox,
C., in the very year in which he was installed at Nicomedia, took part in the Synod of Sirmium and in the deposition of Photinus. He was one of the recipients of the letter in which George of Laodicea pointed out the harm to which the faith at Antioch was exposed as a result of the recognition of Aetius and his disciples by the patriarch Eudoxius, and requested vigorous measures for their deposition. A delegation was then sent to the emperor Constantius, who revoked his previous decision in favour of Eudoxius and charged C. with conducting an inquiry against Aetius and his companions.
The bishop of Nicomedia died shortly afterwards in the earthquake that destroyed the city (358).