HALF SIBLINGS
'A complicated family'
If he wins the White House, Barack Obama would by no means be the first president with half-siblings.
Bill Clinton and Franklin Delano Roosevelt each had a half-brother. And Gerald Ford had six half-siblings through second marriages of his mother and father.
But Obama's immediate family is certainly one of the more complex in presidential history.
(Courtesy of the Obama Family)
His father, Barack Obama Sr., had four children by a woman he married in Kenya before his 1960 marriage to Obama's mother in Hawaii. Two of those children -- son Abongo (Roy} and daughter Auma -- were born before Barack Obama Jr.
After Obama Sr. divorced Obama's mother in 1963, he married another American woman he brought to Kenya and had two more sons -- Mark and David, who was killed in a motorcycle accident. That marriage ended in divorce, after Obama Sr. resumed his relationship with his first wife.
The elder Obama had two other sons -- Abo and Bernard -- by his first wife, though Obama wrote in his memoirs that there is some question whether another man actually fathered Bernard.
Obama Sr. later had another son, George, by a woman he was involved with but apparently did not marry.
As for Obama's mother, the former Stanley Ann Dunham, she had a daughter, Maya Soetoro-Ng, from a second marriage to Lolo Soetoro.
"It's a complicated family, don't you think?" Soetoro-Ng said during a 2004 interview, describing Obama's 1992 wedding. "I remember his wedding. And there were everything from the very fair Kansas complexion, you know, the Scots-Irish thing, to the blue-black Kenyan. And we looked like the rainbow tribe -- and me in between. I'm Indonesian. . . . The united colors. Never a dull moment, right?"