Are you aware that Francis Marion was a Am. Rev. hero???
Plus, as far as that goes, I had James Sterling Harper who was my gg grandfather.
His nephew was also James Sterling Harper, and he lived in Illinois, served in the
Civil War, had dark hair and a straight nose.
Some long lost cousins kept trying to tell me that was my ancestor which I knew could not be.
The point being, there is always a connection to whatever if you can just reason it out.
Good luck.