Gnaeus Pompeius Strabo (135–87 BC), whose cognomen means "cross eyed", is often referred to in English as Pompey Strabo to distinguish him from Strabo the geographer, and was the father of Pompey the Great. He lived in the Roman Republic and was born and raised into a noble family in Picenum (in the south and the north of the modern regions of Marche and Abruzzo respectively) in Central Italy, on the Adriatic Coast. Strabo’s mother was called Lucilia. Lucilia’s family originated from Suessa Aurunca (modern Sessa Aurunca) and she was a sister of satire poet Gaius Lucilius. Lucilius was a friend of Roman general Scipio Aemilianus Africanus. Strabo’s paternal grandfather was Gnaeus Pompeius, while his father was Sextus Pompeius. His elder brother was Sextus Pompeius and his sister was Pompeia.
Strabo became the first of his branch of the gens Pompeia to achieve senatorial status in Rome, despite the anti-rural prejudice of the Roman Senate. After proving his military talent, Strabo climbed the cursus honorum and became promagistrate in Sicily 93 BC and consul in the year 89 BC, in the midst of the Social War.
Strabo commanded Roman forces against the Italian Allies in the northern part of Italy. His three Roman legions were instrumental in Rome's victory. After his consulship and the war, he retired to Picenum with all of his veteran soldiers. Optimates gave his army to Quintus Pompeius Rufus, the new consul. This caused Pompeius Rufus to be murdered by Strabo’s soldiers. He remained there until 87 BC, when he responded to the Optimates' request for help against the Marian Party. Strabo had the habit of playing both ends against the middle in the intense politics of the period. For this Rutilius Rufus referred to him as "the vilest man alive".