[1] One of the first members of the gens Vibia to achieve political success, he was a Novus homo who rose through the cursus honorum as a result of his friendship with Julius Caesar, under whom he served in Gaul.
[8] In that same year, Caesar appointed Pansa as governor of Cisalpine Gaul to replace Marcus Junius Brutus, a post he took up on 15 March 45 BC.
[17] Added to this was the fact that Pansa was married to Fufia, the daughter of Quintus Fufius Calenus, who was a key supporter of Antonius.
The end result was the Senate legitimised the army of Octavianus, and assigned him to work alongside Pansa and Hirtius in their upcoming fight against Antonius.
[20] The Senate, rejecting Antonius’s compromises, directed the consuls to do whatever was necessary to preserve the security of the Republic and relieve Decimus Junius Brutus Albinus at Mutina.
[21] When discussing the state of affairs in the east under Gaius Cassius Longinus and Brutus, Pansa supported the motion to declare the Caesarean Publius Cornelius Dolabella a public enemy, but managed to deny Cicero’s proposal to grant Cassius extraordinary powers in the east to deal with Dolabella.
[25] Antonius, hearing of Pansa's approach, intercepted him on 14 April 43 BC at the Forum Gallorum, some seven miles south-east of Mutina.
He lived long enough to hear of Antonius’s second defeat at Mutina on 21 April, and the death of his consular colleague Hirtius during the battle.