Eumenes II
During the Treaty of Apamea in 188 BC, Antiochus III was forced to give the region of Lycia to the King Eumenes II of Pergamon. In the Treaty of Apamea, Ptolemy II's position was explicitly safeguarded. According to dedication inscriptions on the Greek island of Delos, Ptolemy II made offerings of thanks for the Peace of Apamea. This included an offering from Ptolemy II in association with Antipater. From 188 BC until at least 181 BC, Ptolemy II became a Client King under the rule of Eumenes II. Probably Ptolemy II sided with Rome as Eumenes II was an ally to Rome. Though Ptolemy II was able to retain his rule of Telmessos and his major land-holdings under Eumenes II, the family of Ptolemy II and Antipater is not heard of thereafter. Antipater was the likely father of Epigonos by an unnamed wife.