From BBC News:
They may be polar opposites politically but US Vice-President Dick Cheney and Democratic candidate Barack Obama are related, Mr Cheney’s wife says.
Lynne Cheney said she had discovered while doing family research for a new book that her husband and the Illinois senator were eighth cousins.
She said she traced a common ancestor of the two men to be a 17th century immigrant from France.
According to Mrs Cheney’s spokeswoman, Mr Obama is distantly related to Mareen Duvall, whose son Samuel married the granddaughter of Mr Cheney’s ancestor, also called Richard Cheney.
Mr Obama’s spokesman, Bill Burton, responded to the news by saying: “Every family has a black sheep.”
Makes me doubt that whole theory of relativity! 😉