Pope from 189. In order to settle the Quartodeciman controversy, he ordered synods to be held throughout Christendom. He threatened Polycrates of Ephesus and other bishops of Asia Minor with excommunication if they refused to give up their practice of keeping Easter on 14 Nisan instead of the following Sunday. He carried out the threat, but the fact that the Churches of Asia Minor remained in communion with Rome suggests that he took back the sentence. Feast day, 28 Jul., suppressed in 1969.