Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
The privileged classes were furious--not merely the nobility, but also the mercantile aristocracy, which felt its exclusive rights endangered by so thorough a state-revolution and once more recognized its true patron in the senate. When the tribune Gabinius after the introduction of his proposals appeared in the senate-house, the fathers of the city were almost on the point of strangling him with their own hands, without considering in their zeal how extremely disadvantageous for them this method of arguing must have ultimately proved.
The tribune escaped to the Forum and summoned the multitude to storm the senate-house, when just at the right time the sitting terminated. The consul Piso, the champion of the oligarchy, who accidentally fell into the hands of the multitude, would have certainly become a victim to popular fury, had not Gabinius come up and, in order that his certain success might not be endangered by unseasonable acts of violence, liberated the consul. Meanwhile the exasperation of the multitude remained undiminished and constantly found fresh nourishment in the high prices of grain and the numerous rumours more or less absurd which were in circulation--such as that Lucius Lucullus had invested the money entrusted to him for carrying on the war at interest in Rome, or had attempted with its aid to make the praetor Quinctius withdraw from the cause of the people; that the senate intended to prepare for the "second Romulus," as they called Pompeius, the fate of the first,(12) and other reports of a like character.
12. According to the legend king Romulus was torn in pieces by the senators.
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Reference address : https://www.ellopos.net/elpenor/rome/5-03-fall-oligarchy-pompeius.asp?pg=32