On January 8 , 1811 , she married John C. Calhoun , her first - cousin - once - removed ( her father 's first cousin ) .
She was a niece of Rebecca Colhoun Pickens , wife of Andrew Pickens .
On January 8 , 1811 , niece married John C. Calhoun , niece 's first - cousin - once - removed ( her father 's first cousin ) .
She was a niece of Rebecca Colhoun Pickens , wife of Andrew Pickens .