Lewis & Short

Ĭōnes, um, m. plur., = Ἴωνες, the inhabitants of Ionia, the Ionians, Mel. 1, 17, 1; Plin. 5, 29, 31, § 113; Cic. Fl. 27; Nep. Milt. 4, 1; also applied to the Athenians, Isid. Orig. 9, 2, 77.