(Μήδειος), another form for Medus, the son of Medeia, from whom the Medes in Asia were believed to have derived their name. (Hes. Th. 1001; Cic. De Off. 1.31.)
[L.S]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