Western Siouan languages
The Western Siouan languages, also called Siouan proper or simply Siouan, are a large language family native to North America. They are closely related to the Catawban languages, sometimes called Eastern Siouan, and together with them constitute the Siouan (Siouan–Catawban) language family.
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.