Blackburn's dau., Patty, b. abt. 1766, m.1788 Elswick Thompson, b. 1764, son of Archbiald Thompson, b. 1736, and Mary Elswick, b. 1742. In his diary, transcripts of which are posted at Doug Moore's web site at http://www.public.asu.edu/~moore, Archibald records the birth of four of Patty and Elswick's children: Lewis, Blackburn,Henery, and Harman. There are other children. The Blackburn family also married into the Lorton family, a second family for Lydia Ratliff Elswick Lorton.