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
Resistance of the Government - Riots - Position of Sulla
His proposals accordingly met with the most decided resistance from the majority of the senate, which first, to gain time, induced the consuls Lucius Cornelius Sulla and Quintus Pompeius Rufus, both declared opponents of demagogism, to enjoin extraordinary religious observances, during which the popular assemblies were suspended. Sulpicius replied by a violent tumult, in which among other victims the young Quintus Pompeius, son of the one and son-in-law of the other consul, met his death and the lives of both consuls themselves were seriously threatened--Sulla is said even to have escaped only by Marius opening to him his house.
They were obliged to yield; Sulla agreed to countermand the announced solemnities, and the Sulpician proposals now passed without further difficulty. But this was far from determining their fate. Though the aristocracy in the capital might own its defeat, there was now--for the first time since the commencement of the revolution--yet another power in Italy which could not be overlooked, viz. the two strong and victorious armies of the proconsul Strabo and the consul Sulla.
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Reference address : https://www.ellopos.net/elpenor/rome/4-07-sulpician-revolution.asp?pg=64