E-pŏn'y-mŏus, a.

a. [Gr. ἐπονομάζειν, to give a name to, from ἐπί, upon, to, and ὀνομάζειν, to name, from ὄνομα, name.] Giving one's name to a people, country, and the like. “The eponymous hero of a deme in Attica.” Grote.

What becomes . . . of the Herakleid genealogy of the Spartan kings, when it is admitted that eponymous persons are to be canceled as fictions? Grote.