Encyclopaedia Britannica, 11th Edition, "Bent, James" to "Bibirine" by Various

2. BERENICE, daughter of Ptolemy Philadelphus, wife of Antiochus Theos

of Syria, who, according to agreement with Ptolemy (249), had divorced his wife Laodice and transferred the succession to Berenice's children. On Ptolemy's death, Antiochus repudiated Berenice and took back Laodice, who, however, at once poisoned him and murdered Berenice and her son. The prophecy in Daniel xi. 6 seq. refers to these events.