Ioannes 420 | Prosopography of the Byzantine Empire |
| Sex | M |
| Floruit | IX |
| PmbZ No. | 3286 |
| Titles | Hypatos (dignity); Chartoularios (office) |
| Seal Sources | Zacos, G. and Veglery, A., Byzantine Lead Seals, vol. I (in 3 parts) (Basel, 1972). |
Ioannes 420 was hypatos and chartoularios; owner of a seal dateable to the ninth century: Zacos and Veglery 2015. The name and titles read: Ἰωάννῃ ὑπάτῳ καὶ χαρτουλαρίῳ.
(Publishable link for this person: )