A / Ăchaeus
noun

Ăchaeus

gen. Ăchaei · gender masculine · decl. 2nd
Son of Xuthus; brother of Ion; and ancestor of the Achaei
Son of Xuthus, brother of Ion, and ancestor of the Achaei.
A king of Lydia
A king of Lydia, Ov. Ib. 301.