Conversation so far:
What is the definition of Melungeon?
Melungeon is a term traditionally applied to one of numerous tri-racial isolate groups of the Southeastern United States.
Where did the Melungeon migrate to or from?
The Melungeon migrated together, sometimes along with white neighbors, from western Virginia through the Piedmont frontier of North Carolina, before settling primarily in the mountains of East Tennessee.
How many Melungeons were there or are there?
The total population of the Melungeon is unknown.

Question: What other aspects of the definition are pertinent?
Self-contained rewrite: What other aspects of the definition of Melungeon are pertinent?