When I say this in your quote, I'm simply suggesting that an Osco-Umbrian version of the name would provide a more direct source than Latin.    From Wordnik.com.  [Me fighting myself on the Etruscan name Uple] Reference

One of his online articles deals with Etruscan grammar pdf which is natural considering that Etruscan studies overlap with Osco-Umbrian studies.    From Wordnik.com.  [Archive 2007-07-01] Reference

In the historical period the Apennines were inhabited by Sabellian peoples who spoke a variety of Osco-Umbrian languages and who periodically raided and sometimes conquered the fertile plains around them.    From Wordnik.com.  [b. The Peoples of Italy] Reference

The wide diffusion of Indo-European tongues—Latin, Osco-Umbrian, Venetic, and Messapian—spoken in Italy at the beginning of the historical period, together with the general continuity of prehistoric cultures attested by archaeology, show that the introduction of Indo-European languages into Italy was a long and complicated process stretching back to the late Neolithic age.    From Wordnik.com.  [b. The Peoples of Italy] Reference

Osco-Umbrian.    From Wordnik.com.  [Subject Index Page 57] Reference