Male King Attalus Sorter of Syria Click to view King Attalus Sorter of Syria in the family tree Click to view King Attalus Sorter of Syria in the family tree in SVG format

Attalus' father was Antiochus I Soter Syria and his mother was Stratonice I Macedonia.  His paternal grandparents were Seleucus I Nicator Babylon and Apama II Baktria; his.  He was the second of three children.  He had a brother and a sister, named Antiochus and Apama.  He had a half-brother named Seleucus I.

Attalus' family with Apollonis of Cyzicus

They had a son named Eumenes.