Achaeus
Ἀχαιός
(Ἀχαιός), according to nearly all traditions a son of Xuthus and Creusa, and consequently a brother of Ion and grandson of Hellen. The Achaeans regarded him as the author of their race, and derived from him their own name as well as that of Achaia, which was formerly called Aegialus. When his uncle Aeolus in Thessaly, whence he himself had come to Peloponnesus, died, he went thither and made himself master of Phthiotis, which now also received from him the name of Achaia. (Paus. 7.1.2; Strab. viii. p.383; Apollod. 1.7.3.) Servius (Serv. ad Aen. 1.242) alone calls Achaeus a son of Jupiter and Pithia, which is probably miswritten for Phthia.
From William Smith (ed.), Dictionary of Greek and Roman Biography and Mythology. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.