Anthiochus I Soter Seleuceia King Seleuceia

Anthiochus I Soter Seleuceia King's father was Seleucus I Nicator Seleuceia King Seleuceia.  His paternal grandparents were Anthiochus Seleuceia and Laodice Seleuceia.  He was an only child.  Anthiochus I Soter Seleuceia King is no longer alive.

They had a son named Antiochus II Theos Seleuceia King.