(Γοργίων), was, according to Xenophon (Xen. Anab. 7.8.8), the son of Hellas, and Gongylus the Eretrian, who received a district in Mysia, as the price of his treachery to his country. [GONGYLUS.] The dates, however, would lead us to suppose that he was a grandson rather than a son of this Gongylus. Of this district Gorgion and his brother Gongylus were lords in B. C. 399, when Thibron passed over into Asia to aid the Ionians against Tissaphernes. It contained the four towns of Gambrium, Palaegambrium, Myrina, and Grynium, and these were surrendered by the brothers to the Lacedaemonian general. (Xen. Hell. iii, 1.6.)
[E.E]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