Eustathios 56 | Prosopography of the Byzantine Empire |
| Floruit | E VIII |
| PmbZ No. | 1753 |
| Titles | Hypatos (dignity) |
| Seal Sources | Cheynet,J.-C., Morrisson, C. and Seibt, W., Les Sceaux byzantins de la Collection Henri Seyrig (Paris, 1991) |
Eustathios 56 was hypatos; owner of a seal dateable to the early eighth century: Seyrig 30. The name and title read: Εὐσταθίου ὑπάτου.
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