Antiochus IX Cyzicenus
Antiochus IX Eusebes was the son of
Antiochus VII Sidetes and
Cleopatra Thea. Upon the death of his father in
Parthia and his uncle
Demetrius II Nicator's return to power (
129 BC), his mother sent him to
Cyzicus on the
Bosporus, thus giving him his nickname. He returned to
Syria in
116 BC to claim the
Seleucid throne from half-brother/cousin
Antiochus VIII Grypus, with whom he eventually divided Syria. He was killed in battle by the son of Grypus,
Seleucus VI Epiphanes in
96 BC.