(Ἄων), a son of Poseidon, and an ancient Boeotian hero, from whom the Boeotian Aonians and the country of Boeotia (for Boeotia was anciently called Aonia) were believed to have derived their names. (Paus. 9.5.1; Stat. Theb. 1.34 ; Steph. Byz. s. v. Βοιωτία.)
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890