The parents of David Briggs are William Briggs (d. 1806) and Elizabeth Reade. Parents of William Briggs are Henry Briggs (b. Aug. 22, 1739; d. 1782 BRUNSWICK County, Virginia) and Elizabeth Blow. Parents of Henry Briggs are William Briggs (d. c.1748) and Mary Cook. Parents of William Briggs are Samuel Briggs (c. 1673) and Mary Bayley. Parents of William Briggs are Henry Briggs (b. c.1635, d. 1680) and Mary Flood. Father of Henry Briggs is Henry Briggs of England.
All of this information is secondary and was provided by Mim Abernethy (firstname.lastname@example.org) who currently resides in Charleston, WV. Her niece, Libby Anderson (email@example.com or firstname.lastname@example.org) of Phoenix, Arizona is still an active genealogist of the Briggs family and a good source of information. Mim wrote an excellent history of the Briggs family many years ago.
Hope this helps.
Ned Armstrong Midlothian, Virginia email@example.com