Halifax County Register of Free Negroes, 1802-1831, Library of Virginia microfilm
no.165, Jesse Mason, of dark complexion, aged 45 years, five feet six inches high, born free. 25 May 1831
no.169, May 25, 1831, Nancy Mason, of dark complexion, about 36 years of age, five feet 2 inches, born free.

In the special lists of "free Negroes" in personal property tax lists for Virginia I've seen the following members of the Mason family:
Lawrence Mason in Bedford, Jesse in Albemarle, Joseph & Sally in Botetourt, John in Brunswick, Thomas in Campbell, Nancy and Judy in Henry County, George Mason in Jefferson County.
Paul
Paul