 The study team noted that the body of historical evidence made it most likely that Thomas Jefferson was the father of Eston and all of Hemings' children.Together with existing historical evidence, the DNA study convinced former skeptics and Jefferson biographers, such as Joseph Ellis and Andrew Burstein, that the president had a long relationship with Hemings and likely fathered all her children.The Carr nephews, identified by Jefferson's grandchildren as the father(s), were shown to have no genetic connection to the Hemings descendant.