Ioannes 603 | Prosopography of the Byzantine Empire |
| Floruit | VIII |
| PmbZ No. | 3366 |
| Locations | Sicily (officeplace) |
| Titles | Dioiketes, Sicily (office) |
| Seal Sources | Borsari, S., "L'amministrazione del tema di Sicilia", RSI 66 (1954), pp. 133-158 |
Ioannes 603 was dioiketes (probably of Sicily, where the seal was found); owner of a seal of uncertain date, possibly eighth century: Borsari, p. 158, no. 20. The text reads: Θεοτόκε βοήθει τῷ σῷ δούλῳ Ἰωάννου διοικητοῦ.
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