John XIII of Constantinople

John XIII (Greek: Ἰωάννης; died after 1320) was the Ecumenical Patriarch of Constantinople from 1315 to 1319. Prior to becoming the patriarch, he had served in the laity and his name was Glykys Melodos; he was sometimes referred to as John Glykys. One of his students was the Byzantine astronomer and scholar Nicephorus Gregoras.

John XIII of Constantinople
Ecumenical Patriarch of Constantinople
ChurchChurch of Constantinople
In office12 May 1315 – 11 May 1319
PredecessorNephon I of Constantinople
SuccessorGerasimus I of Constantinople
Personal details
Born?
Diedafter 1320
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