In "History of Fayette Co. PA "there is a reference to Mary Duvall who was an early settler in Springhill Twp. No one knew where she came from. She was a strong and wild woman, an avid Catholic who hated protestants, (so must not have been related to the Protestant Duvalls of Maryland. She was a friend to the Indians and apparently her children were all fathered by her Indian friends, including Lewis Duvall who went to KY and was a Revolutionary War soldier (he was my ancestor)Daniel and Dennis Duvall. Does anyone have any information on this Mary Duvall? the History of Fayette Co. PA is on line in digital format.