Question: Driggers is a surname, it arrives from Celtic descent, and is thought to be a name given to "Dredge Diggers", Driggers can be found in descendants of tri-racial isolate groups such as the Brass Ankles, Lumbee, and which term traditionally applied to one of numerous "tri-racial isolate" groups of the Southeastern United States?
Sentence (from "Melungeon"): Historically, Melungeons were associated with the Cumberland Gap area of central Appalachia, which includes portions of East Tennessee, Southwest Virginia, and eastern Kentucky.
Relevant evidence: No