He minted denarii referring to the famous trial of the vestal virgins of 114–113 BC, which was prosecuted by his ancestor Lucius Cassius Longinus Ravilla.
[3] Longinus was made a proconsul[4] by Caesar's appointment in 48 BC, during the civil war.
He occupied Thessaly, but was forced by Metellus Scipio to retreat, after which he joined Calvisius Sabinus in Aetolia.
Along with his fellow tribunes Tiberius Canutius and Decimus Carfulenus, L. Cassius was excluded from the important meeting of the Roman senate held November 28 to reassign several provinces for the following year.
[6] A bill enabling Caesar to add new families to the patriciate[7] was probably sponsored by him rather than his brother as praetor.