Antiochus II (Antiochus Theos)āntĪˈəkəs thēˈŏs, d. 247 B.C., king of Syria (261?–247 B.C.), 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 an earlier marriage, Seleucus II, and Berenice on behalf of her infant son struggled for the throne; a long war with Ptolemy III ensued.
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