Barack Obama, if elected (which seems likely) will be the first American President of colour.
But he will not be someone who comes from purely humble roots (how many degrees of separation?).
While his father's background is somewhat unclear, he was a successful and well educated man from Kenya. His mother's family history is better known and shows a family well established in the history of America. It aslo shows connections to royalty -- a common theme in American Presidential candidates (in fact, it is striking how many American Presidents have royal blood).
Anyway, Obama's bloodline consists of Luo (Kenyan), English, German, Irish, Welsh, and smattering of French and Dutch ancestries. His pedigree shows different groups of people spanning several generations from different places.
Obama’s Kenyan ancestry is sketchy, and is known in detail only through the male line. Much of his known family tree is through his maternal side, and it is here that we find many interesting relations to the senator.
Obama can count at least two royal ancestors: William I “the Lion”, King of Scotland, and Henry II of England. He is related to at least six US Presidents: Jimmy Carter (half 7th cousins three times removed), Harry Truman (7th cousins three times removed), the 2 George Bushes (10th cousins once and twice removed, respectively), Woodrow Wilson (husband of Obama’s 6th cousin five times removed), and James Madison (3rd cousin nine times removed). He is also a ninth cousin once removed of Vice-President Dick Cheney.
See Obama’s family tree here: