Son of Poseidon
Son of Poseidon (Hyg. fab. 157), father of Hippomenes (Ov. met. 10,605). M. brings an army to the aid of Nisus against Minos and falls in the battle. The city of Nisa is renamed after M. to Megara  (Paus. 1,39,5). According to others, M. is married to Nisus's daughter Iphinoe and succeeds him (ibid. 1,39,6; see also 1,41,3).