You're getting there. You need to understand what the baby-sitter said. She baby-sat when her own daughter, who was born in July, 1959, was 18 months of age. That means the baby-sitting was in JANUARY 1961.
Seven months before your little 'Barry' was 'born'. And who did she baby-sit for?
THE WOMAN WHOSE NAME WAS IN THE SEATTLE POLK. ANNA OBAMA.
Anna, who planned to place the child up for adoption, but obviously didn't, because the father took the little boy to Kenya. (Where Malik said he remembers growing up with LITTLE BARACK in the village; maybe he was one of granny Sarah's little orphans?)
BTW, thanks for roughly rehashing the research, saves me the trouble...but I do wish you would learn to start at the beginning. You wouldn't be deliberately muddying the water, would you?
And that's about enough from me on the subject. The boss hates flame wars and this could end up being one.