Eustathios 58 | Prosopography of the Byzantine Empire |
| Floruit | E/M IX |
| PmbZ No. | 1784 |
| Occupation | Monk |
| Titles | Archbishop, Kios (Bithynia) (office) |
| Textual Sources | Menologium Basilii, PG 117. 20-613 (hagiography); Synaxarium Ecclesiae Constantinopolitanae, Propylaeum ad AASS Novembris, ed. H. Delehaye, (Brussels, 1902) (hagiography) |
Eustathios 58 was a monk who became archbishop of Kios in Bithynia; an iconophile, he suffered persecution and beatings under an iconoclast emperor, probably between 815 and 842, and was exiled from his see, dying after some years still in exile: Synax. Eccl. Const. 567/568, 37ff.; 569/570, 30-37; 572, 16ff.; 573/574, 30; Menol. Bas. 376D. He was commemorated on 28 March, 29 March and 30 March.
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