Seleucus II Callinicus
Antiochus I Soter was succeeded by his son Antiochus II (261–246 BC) named Theos, or "divine", who conducted the Second Syrian War (260–253 BC). Eventually he was poisoned by his first wife, Laodice I who also poisoned his second wife Berenice Phernophorus, daughter of Ptolemy II Philadelphus and her infant son. Antiochus II's son by Laodice from his first wife, Seleucus II Callinicus (246–225 BC), was proclaimed by his mother.