He was a friend of Cicero, to whom he gave his support at the time of the Catilinarian conspiracy (Plutarch, Cicero, 20; Cicero„ Pro Sull y, xiv.
But they still remained hostile to Rome, as is shown by the conduct of their ambassadors in the Catilinarian conspiracy (63; see Catiline); two years later a revolt under Catugnatus was put down by Gaius Pomptinus at Solonium.
He consistently opposed Caesar, whom he endeavoured to implicate in the Catilinarian conspiracy.
In this he was successful at the time of the Catilinarian conspiracy, in the suppression of which he was materially aided by the equites.
Lucius Calpurnius Bestia, one of the Catilinarian conspirators, possibly a grandson of the above.