Santee Dakota Also known as Flandreau, Dakota, Santee, Santee, Sioux: Santee, Santee Sioux, Sioux, Santee, Eastern Sioux, Santees, Isáŋyathi, Eastern Dakota, Bdewákaŋthuŋwaŋ, Waȟpéthuŋwaŋ, Waȟpékhute, Sisíthuŋwaŋ