Marcus Junius Brutus often referred to as Brutus, was a politician of the late Roman Republic

Roman Republic

The Roman Republic was the period of the ancient Roman civilization where the government operated as a republic. It began with the overthrow of the Roman monarchy, traditionally dated around 508 BC, and its replacement by a government headed by two consuls, elected annually by the citizens and...

. After being adopted by his uncle he used the name Quintus Servilius Caepio Brutus, but eventually returned to using his original name. He is best known in modern times for taking a leading role in the assassination of Julius Caesar

Assassination of Julius Caesar

The assassination of Julius Caesar was the result of a conspiracy by approximately forty Roman senators who called themselves Liberators. Led by Gaius Cassius Longinus and Marcus Junius Brutus, they stabbed Julius Caesar to death in the Theatre of Pompey on the Ides of March 44 BC...

.
Marcus Junius Brutus the Younger was the son of Marcus Junius Brutus the Elder

Marcus Junius Brutus the Elder

Marcus Junius Brutus, sometimes referred to by modern historians as Marcus Junius Brutus the Elder to distinguish him from his more famous son, was a tribune of the Roman Republic in 83 BC and the founder of the colony in Capua. He was the first husband to Servilia Caepionis, the elder half-sister...

 and Servilia Caepionis

Servilia Caepionis

Servilia Caepionis was the mistress of Julius Caesar, mother of one of Caesar's assassins, Brutus, mother-in-law of another Caesar assassin, Cassius, and half-sister of Cato the Younger.-Life:...

. His father was killed by Pompey the Great

Pompey

Gnaeus Pompeius Magnus, also known as Pompey or Pompey the Great , was a military and political leader of the late Roman Republic...

 in dubious circumstances after he had taken part in the rebellion of Lepidus; his mother was the half-sister of Cato the Younger

Cato the Younger

Marcus Porcius Cato Uticensis , commonly known as Cato the Younger to distinguish him from his great-grandfather , was a politician and statesman in the late Roman Republic, and a follower of the Stoic philosophy...

, and later Julius Caesar's mistress.