Lucius Calpurnius Piso Caesoninus was a statesman

Statesman

A statesman is usually a politician or other notable public figure who has had a long and respected career in politics or government at the national and international level. As a term of respect, it is usually left to supporters or commentators to use the term...

 of ancient Rome

Ancient Rome

Ancient Rome was a thriving civilization that grew on the Italian Peninsula as early as the 8th century BC. Located along the Mediterranean Sea and centered on the city of Rome, it expanded to one of the largest empires in the ancient world....

 and the father-in-law of Julius Caesar

Julius Caesar

Gaius Julius Caesar was a Roman general and statesman and a distinguished writer of Latin prose. He played a critical role in the gradual transformation of the Roman Republic into the Roman Empire....

 through his daughter Calpurnia Pisonis

Calpurnia Pisonis

Calpurnia Pisonis , daughter of Lucius Calpurnius Piso Caesoninus, sister of Lucius Calpurnius Piso, "the Pontifex", was a Roman woman and the third and last wife of Julius Caesar. Calpurnia was the great-granddaughter of a lieutenant of Lucius Cassius Longinus, whose name was Lucius Piso...

. He also had a son, Lucius Calpurnius Piso

Lucius Calpurnius Piso (consul 15 BC)

Lucius Calpurnius L. f. L. n. Piso Caesoninus was a prominent Roman senator of the early principate. He was the son of Lucius Calpurnius Piso Caesoninus and brother of Calpurnia Pisonis, wife of Julius Caesar. He became a confidante of the emperors Augustus and Tiberius...

, known as "the Pontifex", who was Consul in 15 BC.
In 58 BC, when consul

Consul

Consul was the highest elected office of the Roman Republic and an appointive office under the Empire. The title was also used in other city states and also revived in modern states, notably in the First French Republic...

, Piso and his colleague, Aulus Gabinius

Aulus Gabinius

Aulus Gabinius, Roman statesman and general, and supporter of Gnaeus Pompeius Magnus, was a prominent figure in the later days of the Roman Republic....

, entered into a compact with Publius Clodius, with the object of getting Marcus Tullius Cicero

Cicero

Marcus Tullius Cicero , was a Roman philosopher, statesman, lawyer, political theorist, and Roman constitutionalist. He came from a wealthy municipal family of the equestrian order, and is widely considered one of Rome's greatest orators and prose stylists.He introduced the Romans to the chief...

 out of the way. Piso's reward was the province of Macedon

Macedon

Macedonia or Macedon was an ancient kingdom, centered in the northeastern part of the Greek peninsula, bordered by Epirus to the west, Paeonia to the north, the region of Thrace to the east and Thessaly to the south....

ia, which he administered from 57 BC to the beginning of 55 BC, when he was recalled.