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Isidore II Xanthopoulos (Greek: Ισίδωρος Β΄ Ξανθόπουλος), (? – 31 March 1462) was Ecumenical Patriarch of Constantinople from 1456 to 1462.

Isidore II of Constantinople
Ecumenical Patriarch of Constantinople
ChurchChurch of Constantinople
In officeJanuary 1456 – 31 March 1462
PredecessorGennadius Scholarius
SuccessorJoasaph I[1]
Personal details
Died31 March 1462


Little is known about the life and the patriarchate of Isidore. His surname derives from the Xanthopoulon monastery in Istanbul which he entered, becoming a hieromonk and later rising to be its abbot.[2] Isidore worked alongside Gennadius Scholarius during the Council of Florence[3] and was one of the signatories of a 1445 document against the East-West Union of Churches.[4] In this period Isidore was deemed as the spiritual father of the Greek community in Istanbul.[3] Immediately prior to his election, he was serving as the Metropolitan bishop of Heraclea.[5]

After the resignation of Gennadius Scholarius as Patriarch in mid-January 1456, Isidore was elected to succeed him. He obtained the confirmation from Sultan Mehmed II and he was consecrated bishop in the Pammakaristos Church.[6]

His reign lasted up to his death on 31 March 1462,[2] and he was succeeded by Joasaph I.[1]


  1. ^ a b Some scholars suggest Gennadius Scholarius (second term) and Sophronius I as Isidore's successor in place of Joasaph I: see the Article List of Patriarchs of Constantinople.
  2. ^ a b Kiminas, Demetrius (2009). The Ecumenical Patriarchate. Wildside Press LLC. p. 37,45. ISBN 978-1-4344-5876-6.
  3. ^ a b Vitalien, Laurent (1968). "Les premiers patriarches de Constantinople sous la domination turque (1454-1476)". Revue des études byzantines (26): 229–263(246). doi:10.3406/rebyz.1968.1407.
  4. ^ Petrides, Sophrone (1911). "Documents sur la ropture de l'union de Florence". Échos d'Orient. 14: 205.
  5. ^ "Patriarcham factum renuntiavit Heracleensis praesul" - Corpus Scriptorum Historiae Byzantinae: Historia Politica et Patriarchica Constantinopoleos, Ed. Niebuhr, B. G. (1849), pg. 95
  6. ^ "Isidore II". Ecumenical Patriarchate. Retrieved 5 July 2011.