Ioannes 545 | Prosopography of the Byzantine Empire |
| Floruit | VII |
| PmbZ No. | 2799 |
| Seal Sources | Gray Birch, W. de, Catalogue of Seals in the Department of Manuscripts in the British Museum (London, 1898) |
Ioannes 545 was the owner of a seal dateable to the seventh century: Gray Birch, BMSeals 17873. The text reads: Θεοτόκε βοήθει Ἰωάννου (sic).
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