LINK - When Thulani Davis began searching for her ancestors, she never expected to discover that President James K. Polk was her 6th cousin. This African-American woman had documented her heritage in a book entitled My Confederate Kinfolk: A Twenty-First Century Freedwoman Discovers Her Roots. Her great-grandmother even sold land belonging to Will Campbell of Yazoo County after his death to one of Gov. Barbour's ancestors. It's quite an interesting article!