Athanasius I of Constantinople

Athanasius I (1230 – 28 October 1310) was the Ecumenical Patriarch of Constantinople for two terms, from 1289 to 1293 and 1303 to 1309. He was born in Adrianople and died in Constantinople. Chosen by the emperor Andronicus II Palaeologus as patriarch, he opposed the reunion of the Greek and Roman Churches and introduced an ecclesiastic reform that evoked opposition within the clergy. He resigned in 1293 and was restored in 1303 with popular support. The pro-Union clerical faction forced him into retirement in early 1310.

Athanasius I of Constantinople
Ecumenical Patriarch of Constantinople
ChurchChurch of Constantinople
In office14 October 1289 – 16 October 1293
23 June 1303 – September 1309
PredecessorGregory II of Constantinople, John XII of Constantinople
SuccessorJohn XII of Constantinople, Nephon I of Constantinople
Personal details
Bornc. 1230
(modern-day Edirne, Turkey)
Died28 October 1310
(modern-day Istanbul, Turkey)

He is commemorated as a saint in the Orthodox Church with his feast day observed annually on 28 October.[1]


  1. ^ Great Synaxaristes: (in Greek) Ὁ Ὅσιος Ἀθανάσιος ὁ Α’ Πατριάρχης Κωνσταντινουπόλεως. 28 Οκτωβρίου. ΜΕΓΑΣ ΣΥΝΑΞΑΡΙΣΤΗΣ.


  • Afentoulidou-Leitgeb, Еirini, Die Hymnen des Theoktistos Studites auf Athanasios I. von Konstantinopel. Einleitung, Edition, Kommentar (Wien, Verlag der Österreichischen Akademie der Wissenschaften, 2008) (Wiener Byzantinische Studien, 27).
  • Boojamra, John L. "Athanasios of Constantinople: A Study of Byzantine Reactions to Latin Religious Infiltration," Church History, 48 (1979), 27–48.
  • Boojamra, John L. Church Reform in the late Byzantine Empire: A study of the patriarchate of Athanasius of Constantinople, 1289-1293, 1303-1309 (Brookline, MA, Hellenic College Press, 1980).
  • Boojamra, John L. The Church and Social Reform: The policies of the Patriarch Athanasios of Constantinople (New York, Fordham University Press, 1993)[ISBN missing]
  • Mitsiou, Ekaterini, "Das Doppelkloster des Patriarchen Athanasios I. in Konstantinopel: Historisch-prosopographische und wirtschaftliche Beobachtungen," Jahrbuch der Österreichischen Byzantinistik, 58 (2008),
  • Pavlikianov, Cyril (2001). The Medieval Aristocracy on Mount Athos: Philological and Documentary Evidence for the Activity of Byzantine, Georgian and Slav Aristocrats and Eminent Churchmen in the Monasteries of Mount Athos from the 10th to the 15th Century. Sofia: Center for Slavo-Byzantine Studies.
  • Talbot, Alice-Mary. "The Patriarch Athanasius (1289–1293; 1303–1309) and the Church," Dumbarton Oaks Papers, 27 (1973), 11–28.
  • Talbot Alice-Mary M. (ed., tr. and comm.), The Correspondence of Athanasius I, Patriarch of Constantinople: Letters to the Emperor Andronicus II, members of the imperial family, and officials (Washington, Dumbarton Oaks Center for Byzantine Studies, 1975).
  • Talbot, Alice-Mary M., Faith healing in late Byzantium: The posthumous miracles of the Patriarch Athanasios I of Constantinople by Theoktistos the Stoudite (Brookline, MA, Hellenic College Press, 1983) (Archbishop Iakovos library of ecclesiastical and historical sources, 8).
Eastern Orthodox Church titles
Preceded by Patriarch of Constantinople
Succeeded by
Preceded by Patriarch of Constantinople
Succeeded by