Theodosios 43 | Prosopography of the Byzantine Empire |
| Sex | M |
| Floruit | M IX |
| Dates | 863 (taq) / 864 (ob.) |
| Religion | Christian |
| Locations | Stoudios (Monastery of, Constantinople) (residence); Stoudios (Monastery of, Constantinople) (officeplace); Stoudios (Monastery of, Constantinople) |
| Occupation | Hegoumenos; Monk |
| Titles | Hegoumenos, Stoudios (Constantinople) (office) |
| Textual Sources | Vita Nicolai Studitae (BHG 1365), PG 105. 863-925 (hagiography) |
Theodosios 43 was hegoumenos of the monastery of Stoudios at Constantinople during the absence of Nikolaos 26; he succeeded Achillas 1, apparently in 863, and died one year later; he was succeeded by Eugenios 6: Vita Nic. Stud. 912B (ὃν sc. Achillas 1 τῆς ἀρχῆς διαδεξάμενος Θεοδόσιος).
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