The deceased David Obama is a brother of Mark Ndesandjo. Both Mark and David are the sons of Ruth and Obama Sr. When she remarried the boys took their step-father’s name but when David became a teen he rebelled against his mother’s American ways and renamed himself David Obama. He eventually ran away from home and was found wandering the streets of Nairobi by Roy aka Abongo Malik. Roy took him in and one night the two went out on Roy’s motorcycle, ending up in a bar. Roy got into a fight at the bar and was arrested. He gave David the keys to his motorcycle before he was taken to jail. David, having been drinking as well, got into a crash on Roy’s motorcycle and died as a result. There have been bad feelings between Ruth’s and Kezia’s families ever since. By all indications I have researched David was born in 1969 and died in 1987 before Jr visited Kenya.
George’s mother, Jael (or something similar) was a woman Obama Sr hooked up with after his divorce from Ruth, stories say he planned on marrying her before he died in a car accident. Jael now lives in Atlanta, GA.