Sally Hemmings was Jefferson's slave mistress. It's proven by DNA he had at least one child by her.
What do the retired Chairman of the Board of DuPont Chemical Corporation, the first black assemblyman in the history of the State of California, one of the co-founders of the NAACP, the first black tenured faculty member of any college in America, the first black woman ever to graduate from Vassar College, and a judge appointed by President George Bush, all have in common? They are all direct descendants of the slave children of Thomas Jefferson.