Theodore I of Constantinople (Greek: Θεόδωρος; died 28 December 687) was the Ecumenical Patriarch of Constantinople from 677 to 679. He had been preceded by Constantine I of Constantinople.[1] During this cataclysmic period, the Byzantine military overcame the Arab incursion against its walls in the Arab siege of Constantinople (674-678). He was succeeded by Patriarch George I of Constantinople.[2]
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