"Mason, David, son of John Mason Jr., who was one of the first justices of Sussex county (1754) and grandson of Captain John Mason, who died September 3, 1755; was burgess for Sussex county in the assemblies of 1761-1765, 1766-1768, 1769-1771, 1772-1774, 1775, and a member of the conventions of 1774, 1775, and 1776. His will was proved in Sussex, June 16, 1785, and shows that he left sons -- William, John, James, Henry, David, Benjamin, Peyton and Joseph Mason -- and daughters Rebecca, wife of Timothy Rives; Elizabeth Rives, and Mary Jeffries."
Source: Encyclopedia of Virginia Biography, Vol. 1, by Lyon Gardiner Tyler, p. 285.
Source: Southside Masons of Virginia: Descendants of John Mason, the Elder of Albemarle Parish, pp. 1-3.