Antiochus XII Dionysus
Antiochus XII Dionysus (
87-
84 BC) was the fifth son of
Antiochus VIII Grypus to take up the diadem, and succeeded his brother
Demetrius III Eucaerus as separatist ruler of the southern parts of the last remaining Seleucidian realms, basically
Damascus and its surroundings. He initially gained support from
Ptolemaic forces but was killed in a campaign against the
Nabataean Arabs, who conquered Damascus soon after.