TO ALL ... Col.Thomas O Blewett could NOT have married Mary Diggs the wife of Nicholas "the Quaker" Stone because Mary died May 23 1767 and Nicholas did NOT die until 1778. Not only that but Mary was born about 1705 and Thomas was not born until 1754. data from:

NOTE: The name of Nicholas` wife, Mary Diggs Stone, first appears on June 27,1740 in the Cedar Creek MM. Mary, wife of Nicholas and a Quaker elder of Caroline Meeting, was reported dead 23 May 1767. [Encyclopedia of American Quaker Genealogy (Hinshaw) vol. VI, Virginia, p. 18]