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Antiochus X Eusebes

King of Syria (r. 95–92/88 BC)

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Antiochus X did not enjoy a stable reign as he had to face three of Seleucus VI's brothers, Antiochus XI, Philip I and Demetrius III. Antiochus XI defeated Antiochus X and expelled him from the capital Antioch in 93 BC. A few months later, Antiochus X regained his position and killed Antiochus XI. This led to both Philip I and Demetrius III becoming involved. The civil war continued but its outcome is uncertain due to the contradictions between different ancient historians' accounts. Antiochus X married his stepmother, Antiochus IX's widow Cleopatra Selene, and had several children with her, including a future king Antiochus XIII.

The death of Antiochus X is a mystery. The year of his demise is traditionally given by modern scholars as 92 BC, but other dates are also possible including the year 224 SE (89/88 BC). The most reliable account of his end is that of the first century historian Josephus, who wrote that Antiochus X marched east to fight off the Parthians who were attacking an unidentified queen called Laodice. Other accounts exist: the ancient Greek historian Appian has Antiochus X defeated by the Armenian king Tigranes II and losing his kingdom; the third century historian Eusebius wrote that Antiochus X was defeated by his cousins and escaped to the Parthians before asking the Romans to help him regain the throne. Modern scholars prefer the account of Josephus and question practically every aspect of the versions presented by other ancient historians. Numismatic evidence shows that Antiochus X was succeeded in Antioch by Demetrius III, who controlled the capital in c. 225 SE (88/87 BC).

Background, early life and name

The second century BC witnessed the disintegration of the Syria-based Seleucid Empire due to never-ending dynastic feuds and foreign Egyptian and Roman interference. Amid constant civil wars, Syria fell to pieces. Seleucid pretenders fought for the throne, tearing the country apart. In 113 BC, Antiochus IX declared himself king in opposition to his half-brother Antiochus VIII. The siblings fought relentlessly for a decade and a half until Antiochus VIII was killed in 96 BC. The following year, Antiochus VIII's son Seleucus VI marched against Antiochus IX and killed him near the Syrian capital Antioch.

Egypt and Syria attempted dynastic marriages to maintain a degree of peace. Antiochus IX married several times; known wives are his cousin Cleopatra IV of Egypt, whom he married in 114 BC, and her sister Cleopatra Selene, the widow of Antiochus VIII. Some historians, such as John D. Grainger, maintain the existence of a first wife unknown by name who was the mother of Antiochus X. Others, such as Auguste Bouché-Leclercq, believe that the first wife of Antiochus IX and the mother of his son was Cleopatra IV, in which case Antiochus X would have been born in c. 113 BC. None of those assertions are based on evidence, and the mother of Antiochus X is not named in ancient sources. Antiochus is a Greek name meaning "resolute in contention". The capital Antioch received its name in deference to Antiochus, the father of the Seleucid dynasty's founder Seleucus I; the name became dynastic and many Seleucid kings bore it.

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