Theognis of Nicaea ( grc-gre, Θέογνις) was a 4th-century

Bishop of Nicaea The Metropolis of Nicaea ( el, Μητρόπολις Νικαίας), was an ecclesiastical province (since the mid-4th century a metropolitan bishopric) of the Patriarchate of Constantinople in the city of Nicaea in the province of Bithynia (now ...

excommunicated Excommunication is an institutional act of religious censure used to end or at least regulate the communion of a member of a congregation with other members of the religious institution who are in normal communion with each other. The purpose ...

after the

First Council of Nicaea The First Council of Nicaea (; grc, Νίκαια ) was a council of Christian bishops convened in the Bithynian city of Nicaea (now İznik, Turkey) by the Roman Emperor Constantine I in AD 325. This ecumenical council was the first effort ...

for not denouncing Arius and his

nontrinitarianism Nontrinitarianism is a form of Christianity that rejects the mainstream Christian doctrine of the Trinity—the belief that God is three distinct hypostases or persons who are coeternal, coequal, and indivisibly united in one being, or essenc ...

strongly enough. He is best known to

history History (derived ) is the systematic study and the documentation of the human activity. The time period of event before the invention of writing systems is considered prehistory. "History" is an umbrella term comprising past events as well ...

as an attendee present at the Council of Nicaea in 325. He was one of the Arian Bishops at that Council. He eventually signed the Nicean Creed with the other Arian supporters, Zopyrus (Bishop of Barca), Eusebius of Nicomedia and Maris of Chalcedon.Charles Freeman, The Closing of the Western Mind: The Rise of Faith and the Fall of Reason, 2002. He was exiled with the other three Arian bishops.

References

4th-century bishops in Roman Anatolia Arian bishops Bishops of Nicaea People excommunicated by Christian churches Year of birth unknown {{bishop-stub