Overview
Nicomedes IV Philopator was the king of Bithynia from c. 94 BC to 74 BC. He was the first son and successor of Nicomedes III of Bithynia.
Life
Memnon of Heraclea wrote that Nicomedes IV was the son of Nicomedes III by his wife Nysa, but according to Granius Licinianus he was a son of Nicomedes III by a first wife called Aristonica, who Granius Licinianus claims died nine days after his birth. He had three half siblings, Nysa by his father's second marriage to Nysa, and a half brother named Socrates Chrestus from his father's concubine, Hagne, and possibly Pylaemenes III by an unknown woman.
His reign began at the death of his father. The first few years of his kingship were relatively peaceful, but soon King Mithridates VI of Pontus (the maternal grand-uncle of Nicomedes IV), one of Rome's greatest enemies during the late Republic, began harassing Bithynia's borders.
Nicomedes IV's brother, Socrates Chrestus, assisted by Mithridates VI, defeated Nicomedes IV's army in 90 BC, and Nicomedes IV was forced to flee to Italy. He was restored to his throne by Manius Aquillius due to Rome's influence in the region. However, Aquillius encouraged Nicomedes IV to raid Mithridates VI's territory, prompting Mithridates VI to retaliate again in 88 BC. Nicomedes IV fled once again to Rome. Mithridates invaded and conquered Bithynia and the Roman provinces of Asia starting the First Mithridatic War.
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