Ioannes 564 | Prosopography of the Byzantine Empire |
| Floruit | L VII/E VIII |
| PmbZ No. | 2905 |
| Occupation | Secretary |
| Titles | Asekretis (office) |
| Seal Sources | Laurent, V., Le corpus des sceaux de l'empire byzatin, V, 1-3, L'église (Paris, 1963-72); II, L'administration centrale (Paris, 1981) |
Ioannes 564 was asekretis; owner of a seal dateable to the late seventh or early eighth century: Laurent, Corpus II, no. 22. The name and title read: Ἰωάννου ἀσηκρῆτις.
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