John XIII of Constantinople

John XIII of Constantinople (Greek: Ἰωάννης; died after 1320) was the Ecumenical Patriarch of Constantinople from 1315 to 1319.^[1] 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.^[2][3] One of his students was the Byzantine astronomer and scholar Nicephorus Gregoras.^[4] John XIII resigned on 11 May 1319.

John XIII of Constantinople
Ecumenical Patriarch of Constantinople
Church	Church of Constantinople
In office	12 May 1315 – 11 May 1319
Predecessor	Nephon I of Constantinople
Successor	Gerasimus I of Constantinople
Personal details
Died	After 1320

Notes and references

1. Nicol, Donald M. (14 October 1993). The Last Centuries of Byzantium, 1261–1453. Cambridge University Press. p. 105. ISBN 978-0-521-43991-6.
2. Bryer, Anthony; Georghallides, G. S. (1993). The Sweet Land of Cyprus: Papers Given at the Twenty-fifth Jubilee Spring Symposium of Byzantine Studies, Birmingham, March 1991. Cyprus Research Centre. p. 382. ISBN 978-9963-0-8024-3.
3. Kiminas, Demetrius (1 March 2009). The Ecumenical Patriarchate. Wildside Press. p. 36. ISBN 978-1-4344-5876-6.
4. Christian-Muslim Relations - A Bibliographical History, Volume 5 (1350–1500). Brill Publishers. 28 June 2013. p. 133. ISBN 978-90-04-25278-3.

Eastern Orthodox Church titles
Preceded by Nephon I	Ecumenical Patriarch of Constantinople 1315 – 1319	Succeeded by Gerasimus I