Texas Heraclides of Aenus (Greek: Ἡρακλείδης Αἴνιος) was one of Plato's students.[1] Around 360 BC, he and his brother Python assassinated Cotys I, the ruler of Thrace.[2] References ^ Diogenes Laërtius, iii. 46 ^ Aristotle, Politics, v. 10, 1311b20-2; Plutarch, Adv. Col. 1126c