Et tu Brutè?¿ This scarce denarius of Marcus Junius Brutus co-conspirator of the murder of Julius Caesar has the portraits of L. Junius Brutus and Gaius Servilius Structus Ahala whom Brutus claimed to be descended from on his mother’s side. 
From Wikipedia: “Ahala was a 5th-century BC politician of ancient Rome, considered by many later writers to have been a hero. His fame rested on the contention that he saved Rome from Spurius Maelius in 439 BC by killing him with a dagger concealed under an armpit. This may be less historical fact and more etiological myth, invented to explain the Servilian cognomen "Ahala"/"Axilla", which means "armpit" and is probably of Etruscan origin.” This myth is supposedly what lead to the conspiracy of the murder of Julius Caesar.

Q. Servilius Caepio (M. Junius) Brutus. 54 BC. AR Denarius Rome mint. Bare head of L. Junius Brutus right / Bare head of C. Servilius Ahala right. Crawford 433/2