Sabellian name meaning - "fifth".
Gnaeus Pompeus Magnus, or Pompey the Great (September 29, 106 BC - September 29, 48 BC), was a military and political leader of the late Roman Republic. He came from a wealthy Italian provincial background, and established himself in the ranks of Roman nobility by successful leadership in several campaigns. Sulla addressed him by the cognomen Magnus (the Great) and he was awarded three triumphs.
Pompey joined his rival Marcus Licinius Crassus and his ally Julius Caesar in the unofficial military-political alliance known as the First Triumvirate. The first triumvirate was validated by the marriage between Julia (daughter of Julius Caesar) and Pompey. After the deaths of Crassus and Julia, Pompey's wife and Caesar's daughter, Pompey sided with the estimate, the conservative and aristocratic faction of the Roman Senate. Pompey and Caesar contended for the leadership of the Roman state leading to a civil war. When Caesar defeated him at the battle of Pharsalus he sought refuge in Egypt, where he was assassinated. His career and defeat are significant in Rome's subsequent transformation from Republic to Principate and Empire.