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
About fourteen miles up from the mouth of the river Tiber hills of moderate elevation rise on both banks of the stream, higher on the right, lower on the left bank. With the latter group there has been closely associated for at least two thousand five hundred years the name of the Romans. We are unable, of course, to tell how or when that name arose; this much only is certain, that in the oldest form of it known to us the inhabitants of the canton are called not Romans, but Ramnians (Ramnes); and this shifting of sound, which frequently occurs in the older period of a language, but fell very early into abeyance in Latin,(1) is an expressive testimony to the immemorial antiquity of the name. Its derivation cannot be given with certainty; possibly "Ramnes" may mean "the people on the stream."
1. A similar change of sound is exhibited in the case of the following formations, all of them of a very ancient kind: -pars--portio-, -Mars- -Mors-, -farreum- ancient form for -horreum-, -Fabii- -Fovii-, -Valerius- -Volesus-, -vacuus- -vacivus-.
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