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Alexander I of Alexandria
(2,918 words)

Alexander held the Alexandrian episcopate (312–328 CE) during the crucial formative years that witnessed the conversion of Constantine and the outbreak of what has become known as the “Arian” controversy. Primarily remembered today for his clash with the presbyter Arius, which sparked the 4th-century CE Trinitarian doctrinal debates, Alexander was one of the leading figures at the First Council of Nicaea in 325 CE and laid the ecclesiastical (Ecclesiology) and theological foundations upon which his protégé and successor Athanasius of Alexandria would build.

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Gwynn, David M., “Alexander I of Alexandria”, in: Brill Encyclopedia of Early Christianity Online, General Editor David G. Hunter, Paul J.J. van Geest, Bert Jan Lietaert Peerbolte. Consulted online on 06 October 2022 <>
First published online: 2018

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