Siouan languages
Siouan or Siouan–Catawban is a language family of North America that is located primarily in the Great Plains, Ohio and Mississippi valleys and southeastern North America with a few other languages in the east.
Stoney language
Stoney—also called Nakota, Nakoda, Isga, and formerly Alberta Assiniboine—is a member of the Dakota subgroup of the Mississippi Valley grouping of the Siouan languages. The Dakotan languages constitute a dialect continuum consisting of Santee-Sisseton (Dakota), Yankton-Yanktonai (Dakota), Teton (Lakota), Assiniboine, and Stoney.