You wrote "The Jewish reference is in Cooper material relating to Thomas Cooper (1733 NC/TN-1796 GA) and his wife Sarah (Anthony) Cooper (1742 Va-1796 GA). Sarah was the daughter of Joseph Anthony and Elizabeth Clark, through on to Mark Anthony."
What was the Jewish Deference you mention? Was it something in the Cooper family papers from that time, or oral family history from that time ?
I am a decedent of Mary Mendes Anthony, the sister of your Sarah. Can you tell me more ?
I suspect that a number of these families were crypto Jews .