Back Eutimi Sincel·le Catalan Euthymios I. (Konstantinopel) German Πατριάρχης Ευθύμιος Α΄ Greek Eutimio I de Constantinopla Spanish Euthyme Ier de Constantinople French Eutimio di Costantinopoli Italian Ефтимиј I Цариградски Macedonian Euthymios I av Konstantinopel NB Eutymiusz I Synkellos Polish Eutímio I de Constantinopla Portuguese
Euthymius I of Constantinople | |
|---|---|
| Ecumenical Patriarch of Constantinople | |
 Consecration of Euthymius as Patriarch of Constantinople, miniature from the Madrid Skylitzes. | |
| Installed | February 907 |
| Term ended | 15 May 912 |
| Predecessor | Nicholas I of Constantinople |
| Successor | Nicholas I of Constantinople |
| Personal details | |
| Born | c. 834 |
| Died | 5 August 917 "ta Agathou", near Constantinople (modern-day Istanbul, Turkey) |
| Nationality | Byzantine Empire |
Euthymius I of Constantinople (Greek: Εὐθύμιος ὁ Σύγκελλος, Syncellus, c. 834 – 5 August 917) was the Ecumenical Patriarch of Constantinople from February 907 to 15 May 912. A monk since his youth, he became spiritual father of the future emperor Leo VI the Wise, and was raised by him to the high ecclesiastical office of syncellus. Despite his turbulent relationship with Leo VI, in 907 he was appointed to the patriarchate and held the post until his deposition shortly before or after Leo VI's death in 912.