(Κάστωρ), a distinguished citizen of Phanagoria, who had once been ill treated by Tryphon, a eunuch of Mithridates the Great. When the king, after his defeat by Pompey, came to Phanagoria, Castor avenged himself by murdering Tryphon. Pompey afterwards honoured him with the title of friend of the Roman people. (Appian, App. Mith. 108, 114.)
[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