Manius Manilius was a Roman Republic

Roman Republic

The Roman Republic was the period of the ancient Roman civilization where the government operated as a republic. It began with the overthrow of the Roman monarchy, traditionally dated around 508 BC, and its replacement by a government headed by two consuls, elected annually by the citizens and...

an orator and distinguished jurist who also had a long military
career. It is unclear if he was related to the Manius Manilius who was degraded by Cato the Censor for embracing his wife in broad daylight in Cato's censorship from 184 BC to 182 BC.

Manilius was 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 Spain in 155 BC when he led an unsuccessful campaign against the Lusitani. He became 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...

 in 149 BC with a Marcius Censorius. He unsuccessfully besieged Carthage

Carthage

Carthage , implying it was a 'new Tyre') is a major urban centre that has existed for nearly 3,000 years on the Gulf of Tunis, developing from a Phoenician colony of the 1st millennium BC...

 during the Third Punic War

Third Punic War

The Third Punic War was the third and last of the Punic Wars fought between the former Phoenician colony of Carthage, and the Roman Republic...

 around 148 BC, and was relieved by the young general Scipio Aemilianus, who became the succeeding consul in 147 BC. Manilius claimed that he would have won the siege if he had more time or more support..

Manilius as a jurist

It was apparently the same ex-consul Manius Manilius (or possibly the elder man living some thirty years earlier), who was the author of a collection of formulae for contracts of sale. His works were still read in the classical period, and he was cited by such authors as Varro

Varro

Varro was a Roman cognomen carried by:*Marcus Terentius Varro, sometimes known as Varro Reatinus, the scholar*Publius Terentius Varro or Varro Atacinus, the poet*Gaius Terentius Varro, the consul defeated at the battle of Cannae...

, 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...

, and Brutus

Brutus

Brutus is the cognomen of the Roman gens Junia, a prominent family of the Roman Republic. The plural of Brutus is Bruti, and the vocative form is Brute, as immortalized in the quotation "Et tu, Brute?", from Shakespeare's play, Julius Caesar....

.
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