9. Q.ServiliusCaepio, son of No. 8, was a tribune of the soldiers in the war against Spartacus, B. C. 72. He died shortly afterwards at Aenus in Thrace, on his road to Asia. He is called the brother of Cato Uticensis, because his mother Livia had been married previously to M. Porcius Cato, by whom she had Cato Uticensis. (Plut. Cat. Mi. 8, 11.)