Historically, Charrua, and the rest of the Charruan languages, were grouped with various other language families of the region.
Daniel Garrison Brinton originally classified Charruan as an independent language family, but later grouped it with the
Tupian languages. Both
Samuel A. Lafone Quevedo and Rudolph Schuller grouped Charruan with the
Guaicuruan languages. Some, including
Alcide d'Orbigny, sought to group the languages with
Gününa Küne (Puelche), and others with
Araucanian (Mapudungun). More recently,
Andrey Nikulin has claimed that the three Charruan languages have little similarity with each other, and therefore unrelated to each other, although
Lyle Campbell classifies the three languages as "beyond doubt ... belong[ing] to the same language family". == Geographical distribution ==