Cassius Longinus was an Ancient Roman

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....

 jurist

Jurist

A jurist or jurisconsult is a professional who studies, develops, applies, or otherwise deals with the law. The term is widely used in American English, but in the United Kingdom and many Commonwealth countries it has only historical and specialist usage...

 and politician. A grandnephew of Servius Sulpicius Rufus

Servius Sulpicius Rufus

Servius Sulpicius Rufus , surnamed Lemonia from the tribe to which he belonged, was a Roman orator and jurist.He studied rhetoric with Cicero, and accompanied him to Rhodes in 78 BC. Finding that he would never be able to rival his teacher he gave up rhetoric for law...

 and descendant of Gaius Cassius Longinus

Gaius Cassius Longinus

Gaius Cassius Longinus was a Roman senator, a leading instigator of the plot to kill Julius Caesar, and the brother in-law of Marcus Junius Brutus.-Early life:...

, he was also one of 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....

's assassins.

Cassius, a pupil of Sabinus, was head of the legal school called the Sabinians or Cassinians. His principal works are the libri (commentarii) iuris civilis in at least ten volumes, which only survive in quotes by later authors such as Iavolenus

Iavolenus Priscus

Lucius Iavolenus Priscus was an eminent Roman jurist, who had an illustrious public and military career in the Imperial service during the reigns of Nerva, Trajan, and Hadrian....

. He held the office of praetor

Praetor

Praetor was a title granted by the government of Ancient Rome to men acting in one of two official capacities: the commander of an army, usually in the field, or the named commander before mustering the army; and an elected magistratus assigned varied duties...

, then that of consul suffectus in 30, and proconsul

Proconsul

A proconsul was a governor of a province in the Roman Republic appointed for one year by the senate. In modern usage, the title has been used for a person from one country ruling another country or bluntly interfering in another country's internal affairs.-Ancient Rome:In the Roman Republic, a...

 of Asia in 40–41, and legatus

Legatus

A legatus was a general in the Roman army, equivalent to a modern general officer. Being of senatorial rank, his immediate superior was the dux, and he outranked all military tribunes...

, governor

Roman governor

A Roman governor was an official either elected or appointed to be the chief administrator of Roman law throughout one or more of the many provinces constituting the Roman Empire...

 of Syria

Syria (Roman province)

Syria was a Roman province, annexed in 64 BC by Pompey, as a consequence of his military presence after pursuing victory in the Third Mithridatic War. It remained under Roman, and subsequently Byzantine, rule for seven centuries, until 637 when it fell to the Islamic conquests.- Principate :The...

in 41-49. He was exiled by Nero to Sardinia in 65 and returned to Rome under Vespasian.