CHAPEL HILL, NC - An NC woman revealed in the last line of her obituary last week that she was the great-aunt of the President of the United States. Margaret Payne, age 87, of Chapel Hill died last Wednesday at a retirement community. She was the younger sister of Barack Obama’s grandmother, who actually did most of the parenting for the future president when he was growing up in Hawaii. Payne was a professor of nutrition who taught at the University of Missouri, Kansas City, and subsequently at the University of North Carolina at Chapel Hill from 1980 to 1990....