Magistrate attested in Apollonia Pontica in 425-339 BC. See W. Leschhorn, Lexikon der Aufschriften auf griechischen Münzen
II (2009) p. 470 s. v. ΕΓΝΩΡ? 5/4 c. BC, p. 502 s. v. [EY]HNΩP, 4 c. BC. E. Paunov, The tetradrachm coinage of Apollonia Pontica:
Iconography, issues and magistrates, in: D. Boteva (ed.), Ex Nummis Lux: Studies in Honour of Dimitar Draganov (2017), 59-87,
p. 67 n. 23, p. 71 issue 10 ([Μ]ΕΓΗΝΩΡ I), p. 75 issue 24 (ΜΕΓΗΝΩ[Ρ] II).