Antiochus XI Epiphanes Philadelphus was a Seleucid monarch who reigned as King of Syria between 94 and 93 BC, during the Hellenistic period. He was the son of Antiochus VIII and his wife Tryphaena. Antiochus XI's early life was a time of constant civil war between his father and his uncle Antiochus IX. The conflict ended with the assassination of Antiochus VIII, followed by the establishment of Antiochus IX in Antioch, the capital of Syria. Antiochus VIII's eldest son Seleucus VI, in control of western Cilicia, marched against his uncle and had him killed, taking Antioch for himself, only to be expelled from it and driven to his death in 94 BC by Antiochus IX's son Antiochus X.

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.