Antiochus VIII Epiphanes/Callinicus/Philometor, nicknamed Grypus, was the ruler of the Hellenistic Seleucid Empire from 125 to 96 BC. He was the younger son of Demetrius II and Cleopatra Thea. He may have spent his early life in Athens and returned to Syria after the deaths of his father and brother Seleucus V. At first he was joint ruler with his mother. Fearing her influence, Antiochus VIII had Cleopatra Thea poisoned in 121 BC.
Coin of Antiochus VIII
Coin of Antiochus VIII Grypus. Reverse: god Sandan standing on the horned lion, in his pyre surmounted by an eagle.
Demetrius II, called Nicator, was one of the sons of Demetrius I Soter. His mother may have been Laodice V, as was the case with his brother Antiochus VII Sidetes. Demetrius ruled the Seleucid Empire for two periods, separated by a number of years of captivity in Hyrcania in Parthia, first from September 145 BC to July/August 138 BC, and again from 129 BC until his death in 125 BC. His brother Antiochus VII ruled the Seleucid Empire in the interim between his two reigns.
Demetrius II Nicator
Coin of Demetrius II. The reverse shows Zeus bearing Nike. The Greek inscription reads ΒΑΣΙΛΕΩΣ ΔΗΜΗΤΡΙΟΥ ΘΕΟΥ ΝΙΚΑΤΟΡΟΣ, i.e. "of king Demetrius God victorious". The date ΔΠΡ is year 184 of the Seleucid era, corresponding to 129–128 BC.
Demetrius Nicator, King of Syria, Killed as He Attempts to Land at Tyre
Parthian conquest of Babylonia, the defeat of the Seleucid king Demetrius II Nicator by the Parthian ruler Mithradates I in 141 BCE. From Babylon, Iraq. British Museum