Ioannes 427 | Prosopography of the Byzantine Empire |
| Sex | M |
| Floruit | IX |
| PmbZ No. | 3300 |
| Titles | Protospatharios (dignity); Demarchos of the Venetoi (office) |
| Seal Sources | Zacos, G. and Veglery, A., Byzantine Lead Seals, vol. I (in 3 parts) (Basel, 1972). |
Ioannes 427 was protospatharios and demarchos of the Venetoi; owner of a seal dateable to the ninth century: Zacos and Veglery 2047. The name and titles read: Ἰωάννῃ πρωτοσπαθαρίῳ καὶ δημάρχῳ τῶν Βενέτων.
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