Chioniades, Gregory

   Astronomer (q.v.) who worked in Constantinople and Trebizond (qq.v.) until he died around 1320. He journeyed to Tabriz, capital of the Mongol ruler of Persia (q.v.), Ghazan Khan (1295-1304), where he studied Persian astronomy, and then returned to Trebizond to train students in it.

Historical Dictionary of Byzantium . .

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