I am looking for more information on this same Nancy Crumley. Have you researched the Thomas Crumley b. 1762 d. 1836 in Habersham, GA as a possible sibling? His father is John Crumley b. 1733 Chester, PA and wife is Ann Falconer. One line of Abercrombies (James Abercrombie b. 1740 wife Hannah Piccard)came from PA to Laurens County, South Carolina in early 1700's.The family of Duncan was closely allied with marriages of two Duncan brothers to two Abercrombie sisters in Lauren County, SC.