Kosmas 50 | Prosopography of the Byzantine Empire |
| Sex | M |
| Floruit | IX |
| PmbZ No. | 4140 |
| Locations | Kibyrrhaiotai (officeplace); Kibyrrhaiotai |
| Titles | Basilikos spatharios (dignity); Strategos, Kibyrrhaiotai (office) |
| Seal Sources | Zacos, G. and Veglery, A., Byzantine Lead Seals, vol. I (in 3 parts) (Basel, 1972). |
Kosmas 50 was a basilikos spatharios and strategos of the Kibyrrhaiotai; owner of a seal dateable to the ninth century: Zacos and Veglery 2090. The name and titles read: Κοσμᾷ βασιλικῷ σπαθαρίῳ καὶ στρατηγῷ τῶν Κυβερραιωτῶν.
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