Antiochus II (Antiochus Theos)āntī´əkəs thē´ŏs [key], d. 247 BC, king of Syria (261?–247 BC), son and successor of Antiochus I. In warfare with Ptolemy II he had sporadic successes, but his marriage to Ptolemy's daughter Berenice sealed the peace, and most of the Syrian possessions his father had lost were restored to Antiochus. On the death of Antiochus, his son by his first marriage of Laodice I, Seleucus II, and Berenice on behalf of her infant son struggled for the throne, and Berenice and her son were killed by Laodice I. A long war with Ptolemy III ensued.
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