I've found the above Wm. Vance buried in Caldwell-Irvine Cemetery, Danville, Boyle Co. KY (see Findagrave).
There is no information about him, re his origin, wife, family, if any, and in my brief search I've only found one reference to a non-cupulative will he made in Mercer County, "KY State Library/Archives, Roll # 998111, Vol 2, p. 217, 1795-1803." I'm trying to see if he is somehow connected to the Middletown (Jefferson Co) KY Vances who were originally from VA (re: Rev. James Vance, (1787-1829)& bur. in Middletown Cemetery.
Any information regarding the Boyle Co. Wm. R. Vance, please post or contact.Thanks.wvy