The line of polygamists in Obama’s family can be traced back generations in western Kenya...His great-grandfather, Obama Opiyo, had five wives, including two who were sisters. His grandfather, Hussein Onyango, had at least four wives, one of whom, Akumu, gave birth to the president’s father, Barack Obama, before fleeing her abusive husband. Obama Sr. was already married when he left Kenya to study at the University of Hawaii, where he married again. His American wife-to-be, Stanley Ann Dunham, was not yet 18 and unaware of his marital situation when she became pregnant with his namesake son in 1961.
In this Obama Family photo are: (bottom row, from left) half-sister Auma, her mother Kezia Obama, Obama’s step-grandmother Sarah Hussein Onyango Obama and unknown; (top row, from left) unknown, Barack Obama, half-brother Abongo (Roy) Obama, and three unknowns.