Gerasimus I of Constantinople (Greek: Γεράσιμος, Gerasimos; died 20 April 1321)[1] was the Ecumenical Patriarch of Constantinople from 1320 to 1321.
[2] He was born in Philadelphia and became abbot of the prestigious Mangana Monastery in Constantinople.
He was elected as patriarch at an advanced age and died on 20 April 1321.
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