Although the ancient sources concur in ascribing an Etruscan origin to the Raeti, they are less clear as to precisely which tribes attested in the region known as
Raetia could be classified as Raeti (and whether such a classification was based on geographical location or language or cultural factors). In addition, there are considerable discrepancies in the names of tribes given by the sources. Some locations of the tribes recorded are uncertain, although most have been established securely by placename and personal-name evidence. Strabo names the
Lepontii,
Camunni (who gave their name to the
Val Camonica,
Lombardy, Italy),
Cotuantii and
Rucantii as Raeti tribes. Of these, the first two are listed with the same spelling in Augustus' inscription while the latter two are probably the
Cosuanetes and the
Rucinates respectively in Augustus. However, the inscription text appears to identify the Rucinates as one of the 4 tribes of the Vindelici recorded as conquered. (But it is possible that the Strabo's
Rucantii were actually another tribe, the
Rugusci, in Augustus). Against Strabo, Pliny considers the Lepontii as a Celtic tribe akin to the
Taurisci and classifies the
Camunni as a tribe of the
Euganei people of northeast Italy, together with the
Trumplini of the neighbouring valley,
Val Trompia. However, neither of Pliny's comments is fatal to the identification of the Lepontii and Camunni as Raeti. The Lepontic language has been definitively classified as a distinct
Continental Celtic language (e.g. Lejeune 1971, Koch 2008). As for the Euganei, their linguistic classification is uncertain due to scanty evidence. It is possible that their speech was also related to Etruscan, possibly a sub-group of
Tyrsenian languages. Alternatively their language may have been
Indo-European, akin to that of their close neighbours, the Celts or the
Veneti (whose language shares several similarities with Latin and the Italic languages, but also has some affinities with other IE languages, especially Germanic and Celtic). In addition, it appears that "Raetia et Vindelicia" was also inhabited by a number of non-Raetic tribes. The
Breuni and
Genauni are classified as
Illyrian by Strabo, while a number of tribes in the region have plausible Celtic etymologies: e.g.
Caturiges from
catu- ("fight" or "warriors") and
Nantuates from
nantu- ("valley") respectively. The
Tropaeum Alpium inscription contains the names of 45 Alpine tribes. The Raetic tribes south of Meran were peacefully integrated into the Roman Empire, and therefore do not feature on the Tropaeum Alpium. The
Tabula clesiana for instance mentions the
Anauni,
Sinduni and
Tulliasses. Taking those that did get named that inhabited the territories of Raetia et Vindelicia province and
Venetia et Histria regio of N. Italy, and eliminating those tribes considered probably Celtic by scholars (
Medulli,
Ucenni,
Caturiges,
Brigiani,
Sogionti,
Ceutrones,
Uberi,
Nantuates,
Sedunes,
Veragri), the following list of possible Raeti tribes results: == Roman conquest ==