Or Inachis, Inachiônê, frequently occur as surnames of Io, the daughter of Inachus. (Virg. Georg. iii. 153; Ov. Fast. iii. 658, Met. ix. 686; Aeschyl. Prom. 591; Callim. Hymn. in Dian. 254.) Epaphus, a grandson of Inachus, bears the same surname (Ov. Met. i. 753); and so also Perseus, merely because he was born at Argos, the city of Inachus. (Ov. Met. iv. 719.)