Gnaeus Calpurnius Piso  Gnaeus Calpurnius Piso (Latin: "Cn. Calpurnius Cn. f. Cn. n. Piso", ca. 44 BC/43 BC - AD 20), was a Roman statesman during the reigns of Augustus and Tiberius. He served as consul in 7 BC, after which he was appointed governor of Hispania and consul of Africa. He belonged to one of Rome's most distinguished senatorial families, whose members included Calpurnia, third wife of Julius Caesar. He was a member of the "gens Calpurnia", specifically among the "Calpurnii Pisones". His father and grandfather both shared his name, with his father being Gnaeus Calpurnius Piso (consul in 23 BC), and his grandfather being one of the participants in the Catiline Conspiracy. He had a brother, Lucius Calpurnius Piso, who was an augur and became consul in 1 BC. Piso was married to Plancina, a woman of noble rank and wealth. By Plancina, Piso had two sons, Gnaeus Calpurnius Piso, who after Piso's death had to take the name of Lucius Calpurnius Piso, and Marcus Calpurnius Piso. Piso held several positions under Augustus and Tiberius. Ronald Syme infers that Piso was a military tribune in the Spanish campaigns of 26-25 BC. This accords with his known tenure as "triumvir monetalis" in 23 BC. Between that office and being appointed quaestor, which enabled him entry into the Roman Senate, Syme infers Piso was married. Syme fills the gap between those events and his consulate with various activities, such as accompanying his friend Claudius Nero in his Alpine campaign. At some date between 5 BC and AD 2 he was admitted to the College of Pontiffs. In 3 BC he was proconsul of the province of Africa, and of Hispania Tarraconensis in AD 9. According to Tacitus, he was cruel to the people of Spain, but during his trial in AD 20 such claims were discounted as "old and irrelevant". Though he was given many appointments throughout his career, Piso was known to have a temper. In AD 16, he argued against Tiberius that the senate should be able to conduct business without the emperor if the emperor was away from Rome.