Indeed they are! I've even tried looking into their line in search of any Harris Co., Georgia people. I was not able to find a connection though.
The ancestors I'm researching, Jarretts, and Copelands that married a couple of Whiteheads were, for the most part, born in Harris Co, GA, with only a few exceptions of 1, 2, maybe 3 Copelands having been born in Virginia or North Carolina, who are not proven to be a part of my direct line. My ancestors who were born in Georgia, remained there for approx. 115-120 years (1790's-1930's).
I don't know, maybe my ancestors are descendants of the original group of Melungeons that landed in Jamestown as this person states, personally, I don't think is likely.