Reported attendance at the First Council of Nicaea
· Nicaea, Bithynia, Roman Empire (modern İznik, Bursa Province, Türkiye)

Wikimedia Commons · Public domain (CC-PD-Mark) · file Nicholas is listed in one early attendee tradition for the First Council of Nicaea, a claim that modern historians regard as uncertain. Attendance is disputed: Nicholas appears only in some early lists and is absent from contemporary accounts. Coordinates represent ancient Nicaea; the council palace's exact site is uncertain.