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.
Lumbee
After repeated rejections under the Croatan, Cherokee and Cheraw labels, the proto Lumbee petitioned the United States Bureau of Indian Affairs in 1924 for recognition as "Siouan" Indians. This petition was rejected largely on the grounds that Siouan was a language, not a tribe. Moreover, there was no record of the Lumbee or their ancestors having ever spoken the Siouan or any other Indian language.