William Aaron S Ancestors

I've found two ancestors of William Aaron Sanders on another web site, possible match but I will have to verify this:

Lewis Sanders, b. abt 1690 in Scotland

His son: Francis Sanders b. 1715 in Virginia.

I still need to get more details, and there is, so far, no paper trail to these two. Also, need their wives' names. But so far, looks like Francis is the father of William Aaron Sanders.