President Obama is the son of a white woman from Kansas and a black man from Kenya. His political lineage includes not just President Bush but also Gerald Ford, Lyndon Johnson, Harry S Truman, Dick Cheney and Winston Churchill.
The connection made with Hollywood star Brad Pitt adds a welcome splash of glamour to his family tree.
Mr Obama was descended from Mareen Duvall, a French Huguenot. His son married the granddaughter of one Richard Cheney, Susannah, who arrived in Ma