A Dictionary of Greek and Roman biography and mythology

5. Called Eurydice by Justin (30.1), and Cleopatra by Livy (27.4), but Arsinoe by Polybius, was the daughter of Ptolemy III. Evergetes, the wife of her brother Ptolemy IV. Philopator, and the mother of Ptolemy V. Epiphanes. She was present with her husband at the battle of Raphia (B. C. 217), in which Antiochus, the Great, was defeated; but her profligate husband was induced towards the end of his reign, by the intrigues of Sosibius, to order Philammon to put her to death. But after the death of Ptolemy Philepator, the female friends of Arsinioe revenged her murder; they broke into the house of Philammon, and killed him together with his son and wife. (Plb. 5.83, 84, 87, 15.25, 32, 33.)