Brutus is a Roman cognomen used by several politicians of the Junii family, especially in the Roman Republic. The plural of Brutus is Bruti, and the vocative form is Brute, as immortalized in the quotation "Et tu, Brute?". Ancient Romans with this name Notable ancient Romans with this cognomen include: Marcus Junius Brutus— Caesar's most famous assassin. Marcus Junius Brutus the Elder, the father of the aforementioned assassin Lucius Junius Brutus — traditional founder of the Repub… (More on Brutus)