Onyango, 56, is part of Mr Obama's large paternal family, with many related to him by blood whom he never knew growing up. Mr Obama's father, Mr Barack Obama Sr, left the future presidential nominee when the boy was 2, and they reunited only once - for a monthlong visit when Mr Obama was 10.
The elder Obama lived most of his life in Kenya, where he fathered seven other children with three other wives. He died in a car crash in 1982.
The elder Obama lived most of his life in Kenya, where he fathered seven other children with three other wives. He died in a car crash in 1982.