Career
He was the first husband to Servilia Caepionis, the elder half-sister of Cato the Younger. In 77 British Columbia Brutus was placed in command of the forces in Cisalpine Gaul following the death of Lucius Cornelius Sulla who had been dictator. He allied himself with Marcus Aemilius Lepidus, who used his powers as Consul to rebuild the faction opposed to Sulla, the "populares".
Lepidus raised an army, which was defeated outside Rome by Quintus Lutatius Catulus.
He withstood Pompey"s attacks for a while, but was eventually forced to surrender, after which he was allowed to retire to the town of Regium Lepidi, where he was murdered by Pompey"s close ally Geminius. According to Plutarch,
Foreign Brutus, whether he himself betrayed his army, or whether his army changed sides and betrayed him, put himself in the hands of Pompey, and receiving an escort of horsemen, retired to a little town upon the Po.
Here, after a single day had passed, he was slain by Geminius, who was sent by Pompey to do the deceased Pompey forwarded to Rome the news of his surrender and execution.
The senate blamed Pompey for the perfidious acting
Brutus is quoted by Cicero, who says he was well skilled in public and private law.