Ioannes 563 | Prosopography of the Byzantine Empire |
| Floruit | VIII |
| PmbZ No. | 2891 |
| Occupation | Secretary |
| Titles | Hypatos (dignity); Basilikos 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); Schlumberger, G. Sigillographie de l'empire byzantin (Paris, 1884) |
Ioannes 563 was hypatos and basilikos asekretis; owner of a seal dateable to the eighth century: Laurent, Corpus II, no. 37 (eighth century) = Schlumberger, Sig., p. 444, no. 1 (dated to the time of the Komnenoi). The name and titles read: Ἰωάννῃ ὑπάτῳ καὶ βασιλικῷ ἀσηκρῆτις.
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