Ioannes 512 | Prosopography of the Byzantine Empire |
| Sex | M |
| Floruit | VII |
| PmbZ No. | 2789 |
| Locations | Chalcedon (Bithynia) (officeplace); Chalcedon (Bithynia) |
| Occupation | Bishop |
| Titles | Bishop, Chalcedon (Bithynia) (office); Metropolitan, Chalcedon (Bithynia) (office) |
| Seal Sources | Dumbarton Oaks, A Catalogue of the Byzantine Seals at Dumbarton Oaks and in the Fogg Museum of Art, eds., J. Nesbitt and N. Oikonomides (Washington, DC, 1991-); Laurent, V., Le corpus des sceaux de l'empire byzatin, V, 1-3, L'église (Paris, 1963-72); II, L'administration centrale (Paris, 1981); Zacos, G. and Veglery, A., Byzantine Lead Seals, vol. I (in 3 parts) (Basel, 1972). |
Ioannes 512 was a metropolitan bishop, probably of Chalcedon (see below); owner of a seal dateable to the seventh century: DOSeals III 77.2 = Laurent, Corpus V 3, no. 1716 = Zacos and Veglery 1244. Obv.: St Euphemia standing, with the legend: η - αγ - ια - ε - υ - φη - μ. Rev.: +Ιωα - ννου μ - ητροπο - λιτου. The use of an image of St Euphemia on the seal suggests that the see was Chalcedon.
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