Person

Gregory Chioniades

c. 1240–c. 1320 · 13th century

Gregory Chioniades was a Byzantine astronomer who travelled around 1295–1300 from Trebizond to Tabriz to study astronomy at the court of the Mongol Ilkhans. He translated Persian astronomical tables and texts into Greek, introducing Islamic astronomy to Byzantium. He later served as bishop of Tabriz before returning to Trebizond.

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Cite this entry
APA
The Epoch Institute. (2026). Gregory Chioniades. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/gregory-chioniades
MLA
“Gregory Chioniades.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/gregory-chioniades. Accessed .
Chicago
The Epoch Institute. “Gregory Chioniades.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/gregory-chioniades.
Harvard
The Epoch Institute (2026) ‘Gregory Chioniades’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/gregory-chioniades (Accessed: ).

Last reviewed October 2026Random entry ↻