Elizabeth Marshall married Thomas Puryear on May 13, 1803, and has always been reported to be a younger daughter of Col. William Marshall and Lucy Goode of Virginia. My family lists her as the connection to Thomas Jefferson since her maternal grandmother was Martha Jefferson, Peter Jefferson's sister, and President Thomas Jefferson's paternal Aunt. So far as far as historical evidence of her parentage, I only have one reference, from a book called "Southside Virginia Genealogies" authored by John W Pritchett and published by Genealogical Publishing Co, inc, and available in several libraries. Is anyone familiar with this family and Elizabeth in particular I would be most grateful! She is listed on WikiTree as Marshall-17954 and I am still pursuing leads including with her profile manager, but mine is the only comment thus far!