Person

Nicholas I Mystikos

852–925 · 9th century · Also known as Nicholas Mystikos

Nicholas I Mystikos was Patriarch of Constantinople from 901 to 907 and again from 912 until his death. He was deposed for opposing the fourth marriage of Emperor Leo VI, then restored, and led the regency for the young Constantine VII in 913–914, when he crowned Simeon I of Bulgaria. His letters record the mission that converted the Alans to Christianity around 916.

Nicholas I Mystikos
Image: Nikolai Pavlovic (1835-1894) · Public domain · Wikimedia Commons

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APA
The Epoch Institute. (2026). Nicholas I Mystikos. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/nicholas-i-mystikos
MLA
“Nicholas I Mystikos.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/nicholas-i-mystikos. Accessed .
Chicago
The Epoch Institute. “Nicholas I Mystikos.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/nicholas-i-mystikos.
Harvard
The Epoch Institute (2026) ‘Nicholas I Mystikos’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/nicholas-i-mystikos (Accessed: ).

Last reviewed October 2026Random entry ↻