John Punch (slave)
In July 2012, Ancestry.com published a paper suggesting that John Punch was a twelfth-generation grandfather of President Barack Obama on his mother's side, on the basis of historic and genealogical research and Y-DNA analysis. Punch's descendants were known by the Bunch or Bunche surname. Punch is also believed to be one of the paternal ancestors of the 20th-century American diplomat Ralph Bunche, the first African American to win the Nobel Peace Prize.