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
Extension of the Latins in Italy
It is well known that a Latin stock inhabited the country from the left bank of the Tiber to the Volscian mountains; but these mountains themselves, which appear to have been neglected on occasion of the first immigration when the plains of Latium and Campania still lay open to the settlers, were, as the Volscian inscriptions show, occupied by a stock more nearly related to the Sabellians than to the Latins. On the other hand, Latins probably dwelt in Campania before the Greek and Samnite immigrations; for the Italian names Novla or Nola (newtown), Campani Capua, Volturnus (from -volvere-, like -Iuturna- from -iuvare-), Opsci (labourers), are demonstrably older than the Samnite invasion, and show that, at the time when Cumae was founded by the Greeks, an Italian and probably Latin stock, the Ausones, were in possession of Campania.
The primitive inhabitants of the districts which the Lucani and Bruttii subsequently occupied, the Itali proper (inhabitants of the land of oxen), are associated by the best observers not with the Iapygian, but with the Italian stock; and there is nothing to hinder our regarding them as belonging to its Latin branch, although the Hellenizing of these districts which took place even before the commencement of the political development of Italy, and their subsequent inundation by Samnite hordes, have in this instance totally obliterated the traces of the older nationality. Very ancient legends bring the similarly extinct stock of the Siculi into relation with Rome. For instance, the earliest historian of Italy Antiochus of Syracuse tells us that a man named Sikelos came a fugitive from Rome to Morges king of Italia (i. e. the Bruttian peninsula). Such stories appear to be founded on the identity of race recognized by the narrators as subsisting between the Siculi (of whom there were some still in Italy in the time of Thucydides) and the Latins.
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Reference address : http://www.ellopos.net/elpenor/rome/1-03-settlements-latins.asp?pg=2