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
At the Expense of the Aequi and Volsci - League with the Hernici
Far more vehement and lasting was the resistance of the Aequi, who, having their settlements to the eastward of Rome as far as the valleys of the Turano and Salto and on the northern verge of the Fucine lake, bordered with the Sabines and Marsi,(10) and of the Volsci, who to the south of the Rutuli settled around Ardea, and of the Latins extending southward as far as Cora, possessed the coast almost as far as the river Liris along with the adjacent islands and in the interior the whole region drained by the Liris.
10. The country of the Aequi embraces not merely the valley of the Anio above Tibur and the territory of the later Latin colonies Carsioli (on the upper part of the Turano) and Alba (on the Fucine lake), but also the district of the later municipium of the Aequiculi, who are nothing but that remnant of the Aequi to which, after the subjugation by the Romans, and after the assignation of the largest portion of the territory to Roman or Latin colonists, municipal independence was left.
We do not intend to narrate the feuds annually renewed with these two peoples--feuds which are related in the Roman chronicles in such a way that the most insignificant foray is scarcely distinguishable from a momentous war, and historical connection is totally disregarded; it is sufficient to indicate the permanent results.
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Reference address : https://www.ellopos.net/elpenor/rome/2-05-subjugation-latins-campanians.asp?pg=9