Possible Clues:

• He was killed during the Ides of March
• Gallic Wars chronicler
• Ruler's motor with a lot of water in back
• ''Your Show of Shows'' star
• 'Brute' finished his final speech
• Edward G. Robinson's "Little __"
• His famous quote begins ''Et tu''
• Eg, Augustus
• ''Julius __'' (Shakespeare play)
• Shaw's '___ and Cleopatra'