Siouan languages
Authors who call the entire family "Siouan" distinguish the two branches as "Western Siouan" and "Eastern Siouan" or as "Siouan-proper" and "Catawban". Others restrict the name "Siouan" to the western branch and use the name "Siouan–Catawban" for the entire family. Generally, however, the name "Siouan" is used without distinction.
Pedee people
Linguists have not identified to which language family the Pedee language belonged, although it was likely a Siouan language, as were the languages of neighboring small tribes in the Piedmont region.