Nicholas Mystikos
Patriarch of Constantinople
- Lived
- 852–925
- Country
- Byzantine Empire
Updated September 2026
About Nicholas Mystikos
Nicholas I Mystikos or Mysticus was the Ecumenical Patriarch of Constantinople from 1 March 901 to 1 February 907 and from 15 May 912 to his death on 15 May 925. His feast day in the Eastern Orthodox Church is 16 May.
Biography from Wikipedia, CC BY-SA 4.0. Photo via Wikimedia Commons.
Sources: book lists and dates from Wikidata and Open Library, ratings from Open Library readers. Last updated September 2026.