Brutus's a Roman cognomen used by several politicians of the Junii family, especially in the Roman Republic. The plural of Brutus's Bruti, and the vocative form's 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 Republi… (More on Brutus)