Helvidius Priscus
Helvidius Priscus, a tribune, praetor and member of the Senate. A student of philosophy in his youth, Helvidius was, like Seneca, exiled on more than one occasion, first for his political associations and later for his own criticisms of the Flavian regime.
He is remembered in particular for standing up to the Emperor Vespasian, and Epictetus recounts their confrontation. When Helvidius saw Vespasian abusing the authority of the Senate, he refused to back down. Warned to stay away, Helvidius insisted on standing up to the Emperor to defend his rights and indeed those of all members of the Senate. He was executed for his troubles.