Michael 55 | Prosopography of the Byzantine Empire |
| Sex | M |
| Floruit | M IX |
| Dates | 869 (taq) / 869 (tpq) |
| Religion | Christian |
| Locations | Constantinople; Antioch (Syria) (officeplace); Antioch (Syria) |
| Occupation | Bishop |
| Titles | Archbishop, Antioch (office); Bishop, Antioch (office); Patriarch, Antioch (office) |
| Textual Sources | Vita Ignatii Patriarchae, by Nicetas (BHG 817), PG 105.488-574) (hagiography) |
Michael 55 was patriarch of Antioch in Syria; he was represented at the Council of Constantinople in 869/870 by Thomas 27, bishop of Tyre: Nicetas, Vita Ignatii 544D (Μιχαὴλ ... τοῦ τῆς Ἀντιοχείας τῆς κατὰ Συρίαν πατριάρχου).
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