I am decended from them, I have a lot of information on William Henderson "Hunter" Cavendish. He was married more than once, and his marriage to Jane McCoy is not acknowledged except by the death record of their daughter Margaret. Margaret married James Knight b. 1780 to James and Margaret Wiseman Knight in Bath. Although Bath county didn't exist until 1783! I have found marriage record of Jane marrying John Williams on 2 Feb 1827. And their son Dr. Benjamin Franklin Williams was born 13 may 1835 and is listed in the 1850 census as Franklin Williams in District 18 (Williamsburg) Greenbrier, Va. The 1900 census has him living in Washington Arkansas...does this information ring a bell? I have lots of stuff on William H. Cavendish since he is my forth great grandfather, and through Jane's brother George Knight is my line. I have collected information that shows the union of William Hunter Cavendish with Mary Elizabeth McCoy in 1765 had 4 children, then he married Jane McCoy Murphy in 1780 and had 4 children, and finally he married a wealthy widow name Alice Mann McClintic and she bore no offspring, but cared for him only a few years before he died. He left over 2,000 acres to James Knight "his son-in-law" according to court documents.