Here is another article on the DNA of Melungeons:
Melungeon DNA Study Reveals

"...Genetic evidence shows that the families historically called Melungeons are the offspring of sub-Saharan African men and white women of northern or central European origin..."

"...Estes and her fellow researchers theorize that the various Melungeon lines may have sprung from the unions of black and white indentured servants living in Virginia in the mid-1600s, before slavery..."