Dictionary of Greek and Roman Biography and Mythology/Antigone 2.
ANTI′GONE (Ἀντιγόνη), the daughter of Cassander (the brother of Antipater), was the second wife of Ptolemy Lagus, and the mother of Berenice, who married first the Macedonian Philip, son of Amyntas, and then Ptolemy Soter. (Droysen, Gesch. d. Nachfolger Alexanders, p. 418, &c., and Tab. viii. 3.)
2. The daughter of Berenice by her first husband Philip, and the wife of Pyrrhus. (Plut. Pyrrh. 4.)