Based on DNA and historical evidence, Thomas Jefferson is widely believed to have fathered four surviving mixed-race children as a widower with his slave Sally Hemings, who was three-quarters white by ancestry and a half sister of the late Martha Wayles Jefferson.
Based on DNA and historical evidence, Thomas Jefferson is widely believed to have fathered the six four mixed-race children of his slave Sally Hemings; four survived to adulthood. Hemings was three-quarters white by ancestry and a half sister of the late Martha Wayles Jefferson.