Their sons were Lewis Venable born 1810, James Merritt Venable born 1813-14 and Leroy Venable born 1816. I descend through Lewis Venable.
If you are a Venable male descended from any of those sons and would be willing to do a cheek swab for DNA with Family Tree DNA and allow the results to be shared, I would be happy to pay the costs. I want to do both a Y test and a Family Finder test. I've spent a couple of years trying to find Joseph's parents and have only succeeded in proving who they were not.