The song title refers to the death of the Roman statesman Julius Caesar, who was assassinated by a republican group on the Ides of March (the 15th) at the senate house. 60 people were involved in the plot, including Brutus, whom Caesar believed to have been his illegitimate son, as his mother Servilia had been Caesar's lover during their youth. According to Shakespeare's play, Julius Caesar, the dictator cried "Et tu, Brute?" ("And you, Brutus?", commonly rendered as "Even You, Brutus?"), when he saw Brutus among the conspirators. Caesar's last words are not known with certainty, and are a contested subject among scholars and historians alike. Some contemporaries claimed Caesar's last words were "You too, child?" However both Suetonius and Plutarch say Caesar said nothing, with the latter also reporting that Caesar pulled his toga over his head when he spotted Brutus.