The son of Antiochus
IX defeated & killed his cousin, Seleucus
VI (94
BCE), who had executed his father & seized the Seleucid throne
the previous year. To secure his reign, Antiochus married his
father's widow, the Egyptian princess Cleopatra
Selene. But he still had to deal with a long string of challenges posed
by Seleucus' younger brothers. While he
easily defeated Antiochus
XI (92
BCE), he lost western Syria to Philip I and
Damascus to Demetrius III. He died in battle with the Parthians who
had overrun his eastern provinces.
References: Josephus,
Antiquities
13.367-371.
Justin, Epitome
40.2.
Appian,
History of Rome: the Syrian Wars 48-49,
69-70.
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