Ioannes 520 | Prosopography of the Byzantine Empire |
| Sex | M |
| Floruit | E/M IX |
| PmbZ No. | 3234 |
| Religion | Christian |
| Locations | Thessalonike; Thessalonike (officeplace) |
| Occupation | Bishop |
| Titles | Archbishop, Thessaloniki (office); Bishop, Thessalonike (office) |
| Textual Sources | Gouillard, J., "Le Synodikon de l'orthodoxie", TM 2 (1967), pp. 45-107 (liturgical) |
Ioannes 520 was named in a list of archbishops of Thessalonike in the Synodikon of Orthodoxy; his name immediately follows that of Ioseph 3: Gouillard, "Synodikon", p. 114, IX, line 5.
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