Ioannes 561 | Prosopography of the Byzantine Empire |
| Sex | M |
| Floruit | L VII |
| PmbZ No. | 2882 |
| Titles | Hypatos (dignity) |
| Seal Sources | Cheynet,J.-C., Morrisson, C. and Seibt, W., Les Sceaux byzantins de la Collection Henri Seyrig (Paris, 1991) |
Ioannes 561 was hypatos; owner of a seal dateable to the late seventh century: Seyrig 29. The name and title read: Ἰωάννῃ ὑπάτῳ.
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