Cupan
The Cupan languages is a branch of the Uto-Aztecan language family that comprises Cupeño, Ivilyuat (Cahuilla), Luiseño-Juaneño, and perhaps Nicoleño[citation needed], all historically spoken in southern California.
The branch had long been considered to be part of the Takic subgroup, but there is doubt about the validity of Takic as a genetic unit, the similarities between the languages classed as Takic possibly being due primarily to borrowing.[1][2]