Theophanes 50 was a monk, probably a Stoudite; he was in Hellas with other monks between 821 and 823 when they received a letter from Theodoros 15 (Theodore the Stoudite) addressed to them jointly (Τοῖς ἠγαπημένοις ἀδελφοῖς Γρηγορίῳ, Ἰεζεκιήλ, Ἐράστῳ, Θεοφάνει, Ἀνίνᾳ, καὶ τοῖς λοιποῖς ἐν Ἑλλάδι: Theod. Stud., Ep. 439, p. 617, lines 1-2); they had been scattered because of persecution; Theodoros 15 addresses them as πατέρες καὶ ἀδελφοί and as ὦ τέκνα (p. 617, lines 6, 22) (suggesting that they were Stoudites); the letter perhaps alludes to the rebellion of Thomas 7 (Thomas the Slav) (ἀτακτοῦντος τοῦ ὑπηκόου: p. 617, line 9). Cf. Aninas 1, Erastos 1, Iezekiel 1.

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