Kosmas 56 | Prosopography of the Byzantine Empire |
| Sex | M |
| Floruit | E IX |
| PmbZ No. | 4126 |
| Religion | Christian |
| Locations | Chalcedon (Bithynia); Chalcedon (Bithynia) (officeplace) |
| Occupation | Bishop |
| Titles | Bishop, Chalcedon (Bithynia) (office); Metropolitan, Chalcedon (Bithynia) (office) |
| Textual Sources | Menologium Basilii, PG 117. 20-613 (hagiography); Synaxarium Ecclesiae Constantinopolitanae, Propylaeum ad AASS Novembris, ed. H. Delehaye, (Brussels, 1902) (hagiography); Theodorus Studita, Epistulae, ed. G. Fatouros, CFHB 31.1-2 (Berlin/New York, 1992) (letters) |
Kosmas 56 was metropolitan bishop of Chalcedon, whose death is alluded to in a letter of Theodoros 15 (Theodore the Stoudite) written in c. 816: Theod. Stud., Ep. 132, pp. 249-250 (unnamed; cf. Fatouros, p. 243*). Kosmas 56 was succeeded by Ioannes 439.
Kosmas 56 was the bishop of Chalcedon and he lost his life together with his companion Auxentios 2 during the iconoclast persecution under Leo V (Leo 15), probably in 815/816; commemorated on 18 April: Synax. Eccl. Const. 613, 13ff. (18 April), Menol. Bas. 409D.
(Publishable link for this person: )