12 - Sarah Childress Polk (September 4, 1803 – August 14,1891) was the wife of the 11th President of the United States, James Polk, and the 12th woman to serve as First Lady. Sarah met James Polk while both were receiving instruction from Samuel P. Black in Murfreesboro, TN, he was 19, she was 12. Several years later James began courting her, and in 1823 the two became engaged. Sarah Childress, aged 20, married James Polk, aged 28, on January 1, 1824, The Polks had no children of their own