Eugenius I of Byzantium explained

Eugenius I (el|Ευγένιος Αʹ|; died) was the bishop of Byzantium from around 240 until his death in 265.^{[1] [2]}

Notes and References

1. Web site: Ευγένιος Αʹ . 21 February 2024 . ec-patr.org . Κατάλογος Οικουμενικών Πατριαρχών [List of Ecumenical Patriarchs] . 25 July 2019 . Office of the Ecumenical Patriarch of Constantinople . el.
2. Book: Kiminas, Demetrius . The Ecumenical Patriarchate: A History of Its Metropolitanates with Annotated Hierarch Catalogs . . 2009 . 9781434458766 . 30–44 . 21 February 2024.