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.
What other aspects of the definition of Melungeon are pertinent?
Melungeons were families descended from free people of color and mixed-race unions between persons of African ancestry and Native Americans in colonial Virginia.
What characteristics do Melungeons exhibit?
Melungeon are generally European American in appearance, often (though not always) with dark hair and eyes, and a swarthy or olive complexion.
What other characteristics are present in Melungeon besides their appearance?
Melungeon were largely endogamous, marrying primarily within their community until about 1900.

Question: What other aspects of Melungeon's set them apart?
Self-contained rewrite: What other aspects of Melungeon's set them apart besides their apperance and being endogamous?