Who is the most famous assassin of Julius Caesar?

Marcus Junius Brutus (85 BC – 23 October 42 BC), often referred to simply as Brutus, was a Roman senator and the most famous of the assassins of Julius Caesar. After being adopted by an uncle, he used the name Quintus Servilius Caepio Brutus, but subsequently returned to his birth name.

Brutus was close to General Julius Caesar, the leader of the Populares faction. However, Caesar's attempts to assume greater power for himself put him at greater odds with the Roman elite and members of the Senate. Brutus eventually came to oppose Caesar and fought on the side of the Optimates faction, led by Pompey, against Caesar's forces in the Civil War (49–45 BC). Pompey was defeated at the Battle of Pharsalus in 48, after which Brutus surrendered to Caesar, who granted him amnesty.