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
Relations between the Samnites and the Greeks
The Samnite tribes filled a disproportionately large space, while yet they showed no disposition to make it thoroughly their own. The larger Greek cities, Tarentum, Thurii, Croton, Metapontum, Heraclea, Rhegium, and Neapolis, although weakened and often dependent, continued to exist; and the Greeks were tolerated even in the open country and in the smaller towns, so that Cumae for instance, Posidonia, Laus, and Hipponium, still remained--as the Periplus already mentioned and coins show--Greek cities even under Samnite rule.
Mixed populations thus arose; the bi-lingual Bruttii, in particular, included Greek as well as Samnite elements and even perhaps remains of the ancient autochthones; in Lucania and Campania also similar mixtures must to a lesser extent have taken place.
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Reference address : http://www.ellopos.net/elpenor/rome/2-05-subjugation-latins-campanians.asp?pg=26