Ann Dunham (1942-1995) was the mother of Barack Obama. She married Barack Obama Sr. a Kenyan atheist. She was skeptical and critical of all religions but it was highly unusual to be an atheist in 1950.  And it was also usual for white girls to marry black men in 1950s.
Anne Dunham met Barack Obama sr at Hawaii University. Later when her marriage broke up Dunham succeeded in getting a degree and looking after her son, the future President. Dunham and her son Barack lived in Indonesia for a few years but but when Barack was 10 they returned to Hawaii where Barack remained with his grandparents after his mother returned to Inonesia for Anthropology field work.