Byzantios 1 | Prosopography of the Byzantine Empire |
| Sex | M |
| Floruit | E IX |
| Dates | 811 (taq) / 811 (tpq) |
| PmbZ No. | 1054 |
| Locations | Constantinople (residence); Constantinople; Markellai (Thrace) |
| Textual Sources | Theophanes Confessor, Chronographia, ed. C. de Boor, 2 vols. (Leipzig, 1883-85, repr. Hildesheim/NewYork, 1980); tr. and comm. C. Mango and R. Scott, The Chronicle of Theophanes Confessor, Oxford 1997 (chronicle) |
In 811 Byzantios 1 was a close attendant on the emperor Nikephoros I (Nikephoros 8) (Βυζάντιος, ὁ τούτου ἐπιστήθιος οἰκέτης) and accompanied him on the expedition against the Bulgars; shortly before the expedition marched into Bulgar territory (which was on 20 July), Byzantios 1 deserted to the Bulgar leader Krum 1 from Markellai, taking with him imperial costumes and one hundred pounds of gold; this was widely regarded as a portent of doom for Nikephoros 8, according to Theophanes: Theoph. AM 6303.
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