Theodosios 16 | Prosopography of the Byzantine Empire |
| Sex | M |
| Floruit | L VIII |
| Dates | 787 (taq) / 787 (tpq) |
| Variant Names | Theodosius |
| Religion | Christian; Iconophile |
| Locations | Hagia Trias (Monastery of) (officeplace); Hagia Trias (Monastery of) (residence); Hagia Trias (Monastery of); Nikaia |
| Occupation | Hegoumenos |
| Titles | Hegoumenos, Hagia Trias (office) |
| Textual Sources | Nikaia, Second Council of (Seventh Ecumenical Council, a. 787) (Mansi XII-XIII) (conciliar) |
Theodosios 16 was hegoumenos of the monastery of Hagia Trias; in 787 he attended the Second Council of Nikaia (the Seventh Ecumenical Council) and is attested at the fourth session, on 1 October 787, when he subscribed the statements read out from the Fathers in support of the veneration of icons: Mansi XIII 156 (Θεοδόσιος ἡγούμενος τῆς Ἁγίας Τριάδος; the Latin version, at XIII 155, calls him "
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