Eusebius of Nicomedia

Eusebius of Nicomedianĭkōmēˈdēə[key], d. 342, Christian churchman and theologian, leader of the heresy ofArianism. He was bishop of Nicomedia (330–39) and patriarch of Constantinople (339–42); Eusebius was powerful because of his influence with Roman Emperor Constantine I and particularly with the emperor's son, Constantius II. He sheltered Arius in 321 and fought his condemnation at Nicaea (see尼西亚,第一次理事会）.Eusebius signed the Nicene formulary but was exiled by Constantine shortly afterward. Eusebius' influence on the emperor's sister Constantia, however, soon won him his reprieve (328). As adviser to Constantius, a committed Arian, he systematically advanced a moderate Arianism throughout the empire.

See more Encyclopedia articles on:Roman Catholic and Orthodox churches: General Biographies