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.
Siraya people
The Siraya are Taiwanese Plains Aborigines ("Pingpu") — that is, occupants of flat coastal regions rather than mountain areas. Like other indigenous peoples of Taiwan they are ethnically and linguistically Austronesian. The name "Taiwan" (historically "Taiouwang", and other variants) originated from the Siraya language. The Austronesian language family to which Sirayan belongs includes most of the languages spoken in the western Pacific, including Polynesian, Indonesian, Filipino and Malaysian.