Ioannes 331 | Prosopography of the Byzantine Empire |
| Sex | M |
| Floruit | VII/VIII |
| PmbZ No. | 2897 |
| Religion | Christian |
| Seal Sources | Speck, P. et al. (eds.), Byzantinische Bleisiegel in Berlin (West) (Bonn, 1986) |
Ioanes 331 was the owner of a seal dateable to the seventh or eighth century: Speck, Bleisiegel 72. Obv.: bust of a saint with long beard and halo (possibly St John Theologos), and a cross. Rev.: cruciform monogram of Ιωαννου.
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