I am seeking to exchange information concerning this family line:

Alexander was probably born in Md.  He later lived in Pike Run Twp., Wash. Co., Pa., Washington Twp., Fayette Co., Pa. & Jefferson Twp., Fayette Co., Pa.

Alexander married 1) Abigail Elizabeth Powell (1760-1820's). 

Their children:  Elizabeth Ailes, John, David, Jacob, Eli, Louis, Hiram & Jehu Duvall.

 Alexander remarried 2) to Maria, who outlived him.