Sarah was a daughter of Elisha Duvall and Polly Keyes. Elisha (b.1835) was a son of F.C (b.1801) who was a son of Alexander Duvall (b.1774 in S.C.). Several people have researched this line and it will be easy to put together a detailed history back to 1800 or so. Sarah's brother F.C was my great grandfather. He lived in Pope Co. from 1856 until 1955 and has hundreds of descendants there today. Contact me if you want more details.