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
Conflicts about Praeneste
In the vicinity of Rome also events appeared to assume a more favourable turn for the revolutionary party, and the war seemed as if it would again be drawn chiefly towards this region. For, while the oligarchic party were concentrating all their energies on Etruria, the democracy everywhere put forth the utmost efforts to break the blockade of Praeneste. Even the governor of Sicily Marcus Perpenna set out for that purpose; it does not appear, however, that he reached Praeneste.
Nor was the very considerable corps under Marcius, detached by Carbo, more successful in this; assailed and defeated by the troops of the enemy which were at Spoletium, demoralized by disorder, want of supplies, and mutiny, one portion went back to Carbo, another to Ariminum; the rest dispersed. Help in earnest on the other hand came from Southern Italy.
There the Samnites under Pontius of Telesia, and the Lucanians under their experienced general Marcus Lamponius, set out without its being possible to prevent their departure, were joined in Campania where Capua still held out by a division of the garrison under Gutta, and thus to the number, it was said, of 70,000 marched upon Praeneste.
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Reference address : https://www.ellopos.net/elpenor/rome/4-09-cinna-sulla.asp?pg=45