Theodosios 77 | Prosopography of the Byzantine Empire |
| Sex | M |
| Floruit | E/M IX |
| Dates | 839 (taq) / 839 (tpq) |
| Variant Names | Theodosius |
| Locations | Chalcedon (Bithynia); Ingelheim (Francia); Chalcedon (Bithynia) (officeplace) |
| Titles | Bishop, Chalcedon (Bithynia) (office) |
| Textual Sources | Prudentius of Troyes, Annales = Annales Bertiniani II, PL 115. 1376-1420; ed. G. Waitz, MGH, Scr. Rer. Ger. 5 (Hanover, 1883), pp. 11-54 (annals) |
Theodosios 77 was metropolitan bishop of Chalcedon; in 839 he and Theophanes 54 were sent by the emperor Theophilos (Theophilos 5) to the Frankish emperor Louis the Pious (Lodo chos 2) with gifts and a letter requesting confirmation of the peace; this embassy was accompanied by envoys of the "Rhos" whom Theophilos sent home by a roundabout route; the envoys were received with honour at Ingelheim on 18 May: Prudentius of Troyes, Annales s.a. 839 ("
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