I created a wikitree profile for William Van Winkle (b. 1782?; d. 1853?), ancestor of President Joe Biden. However, I am having problems finding a source for his supposed death "before 01 September 1853". Can someone with an account with geni.com tell me if clicking on that in his geni.com profile gives a source? https://www.geni.com/people/William-Van-Winkle/6000000173460813916 I have been unable to find him in census records from 1820 to 1850. I have had much better luck researching his daughter Susan.