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Athanasius I of Constantinople
Ecumenical Patriarch of Constantinople
Church	Church of Constantinople
In office	14 October 1289 – 16 October 1293 23 June 1303 – September 1309
Predecessor	Gregory II of Constantinople, John XII of Constantinople
Successor	John XII of Constantinople, Nephon I of Constantinople
Personal details
Born	c. 1230 Adrianople (modern-day Edirne, Turkey)
Died	28 October 1310 Constantinople (modern-day Istanbul, Turkey)

Athanasius I (Greek: Ἀθανάσιος; 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.

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

Bibliography

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 byGregory II Patriarch of Constantinople 1289–1293 Succeeded byJohn XII Preceded byJohn XII Patriarch of Constantinople 1303–1310 Succeeded byNephon I

v t e Bishops of Byzantium and Patriarchs of Constantinople
Bishops of Byzantium (Roman period, 38–330 AD)	Andrew Stachys Onesimus Polycarpus I Plutarch Sedecion Diogenes Eleutherius Felix Polycarpus II Athenodorus Euzois Laurence Alypius Pertinax Olympianus Marcus I Philadelphus Cyriacus I Castinus Eugenius I Titus Dometius Rufinus Probus Metrophanes Alexander
Archbishops of Constantinople (Roman period, 330–451 AD)	Alexander Paul I Eusebius Macedonius I Eudoxius Evagrius Demophilus Maximus I Gregory I Nectarius John I Chrysostom Arsacius Atticus Sisinnius I Nestorius Maximianus Proclus Flavian Anatolius
Patriarchs of Constantinople (Byzantine period, 451–1453 AD)	Anatolius Gennadius I Acacius Fravitta Euphemius Macedonius II Timothy I John II Epiphanius Anthimus I Menas Eutychius John III John IV Cyriacus II Thomas I Sergius I Pyrrhus Paul II Peter Thomas II John V Constantine I Theodore I George I Paul III Callinicus I Cyrus John VI Germanus I Anastasius Constantine II Nicetas I Paul IV Tarasius Nicephorus I Theodotus I Antony I John VII Methodius I Ignatios Photios I Stephen I Antony II Nicholas I Εuthymius I Stephen II Tryphon Theophylact Polyeuctus Βasil I Αntony III Nicholas II Sisinnius II Sergius II Eustathius Alexius Michael I Constantine III John VIII Cosmas I Eustratius Nicholas III John IX Leo Michael II Cosmas II Nicholas IV Theodotus II Neophytus I Constantine IV Luke Michael III Chariton Theodosius I Basil II Nicetas II Leontius Dositheus George II John X Michael IV^† Theodore II^† Maximus II^† Μanuel I^† Germanus II^† Methodius II^† Manuel II^† Arsenius^† Nicephorus II^† Germanus III Joseph I John XI Gregory II Athanasius I John XII Nephon I John XIII Gerasimus I Isaias John XIV Isidore I Callistus I Philotheus Macarius Nilus Antony IV Callistus II Matthew I Euthymius II Joseph II Metrophanes II Gregory III Athanasius II
Patriarchs of Constantinople (Ottoman period, 1453–1923 AD)	Gennadius II Isidore II Joasaph I Sophronius I Mark II Symeon I Dionysius I Raphael I Maximus III Nephon II Maximus IV Joachim I Pachomius I Theoleptus I Jeremias I Joannicius I Dionysius II Joasaph II Metrophanes III Jeremias II Pachomius II Theoleptus II Matthew II Gabriel I Theophanes I Meletius I Neophytus II Raphael II Cyril I Timothy II Gregory IV Anthimus II Cyril II Athanasius III Neophytus III Parthenius I Parthenius II Joannicius II Cyril III Paisius I Parthenius III Gabriel II Parthenius IV Dionysius III Clement Methodius III Dionysius IV Gerasimus II Athanasius IV James Callinicus II Neophytus IV Gabriel III Neophytus V Cyprianus Athanasius V Cyril IV Cosmas III Jeremias III (Callinicus III) Paisius II Seraphim I Neophytus VI Cyril V Callinicus IV (III) Seraphim II Joannicius III Samuel Meletius II Theodosius II Sophronius II Gabriel IV Procopius Neophytus VII Gerasimus III Gregory V Callinicus V (IV) Jeremias IV Cyril VI Eugenius II Anthimus III Chrysanthus Agathangelus Constantius I Constantius II Gregory VI Anthimus IV Anthimus V Germanus IV Meletius III Anthimus VI Cyril VII Joachim II Sophronius III Joachim III Joachim IV Dionysius V Neophytus VIII Anthimus VII Constantine V Germanus V Meletius IV
Patriarchs of Constantinople (Turkish period, since 1923 AD)	Gregory VII Constantine VI Basil III Photius II Benjamin Maximus V Athenagoras Demetrius Bartholomew
^† in exile at Nicaea Christianity portal

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