3. Wife of Seleucus Callinicus, was, according to the express statement of Polybius (4.51, viii. 22), a sister of Andromachus, the father of Achaeus. It seems not improbable that she was a niece of the preceding, but Niebuhr (Kl. Scltrift. p. 263), who calls her so, has erroneously made her daughter of Andromachus, instead of his sister, and Droysen (Hellenism. vol. ii. p. 347) has fallen into the same mistake. Great confusion certainly exists concerning the two, but there seems no reason to doubt the authority of Polybius; and we have no evidence that the Achaeus who is mentioned by Eusebius as father of No. 2, was the same as the father of Andromachus. She was the mother of Seleucus Ceraunus and Antiochus the Great.