Siouan languages
Siouan languages can be grouped into the Western Siouan languages and Catawban languages. The Western Siouan languages can be divided into Missouri River languages (such as Crow and Hidatsa), Mandan, Mississippi River languages (such as Dakotan, Chiwere-Winnebago, and Dhegihan languages), and Ohio Valley Siouan branches. The Catawban languages consist only of Catawban and Woccon.
Montmartre, Saskatchewan
Assiniboine is a Siouan language. It was derived from other Sioux dialects at the same time as other Sioux languages were being diverged and differentiated from each other. The language today is endangered, and there are very few speakers that are living. Most Assiniboine today are English speakers.