1.  Jordan R. Dodd, ed.  1993.  Virginia Marriages: Early to 1850.  Liahona Research, Orem, UT (Broderbund CD-229) :

Thompson, William M.

Ball, Mildred F.

25 Nov 1820

Loudoun Co., VA

2.  Horace Edwin Hayden.  1891.  "Ball, of Virginia."  Pp. 45-144 in A Genealogy of the Glassell Family of Scotland and Virginia... (self-published) Wilkes-Barre, PA (Broderbund CD-205).

3.  Beverly M. Stercula.  [1960s/70s.]  Thompson Family Magazine.  Archives of the THOMPSON-L mailing list (online at RootsWeb.com).

4.  George Rose & Margaret Rose.  1969.  The Kay-Pendleton-Neel Families.  J. Grant Stevenson, Provo, UT (online at GenealogyLibrary.com).  On p. 200:

William Mills Thompson, the brother of our ancestress Frances Jackson Thompson and the third child of their parents, is treated at length in Hayden's Virginia Genealogies.  He is described as a "lawyer of eminence and a man of great erudition in other lines."  He was vestryman of St. Marks Parish, Culpeper County, Virginia.  His son, Honorable Richard W. Thompson was President Pro Tem. of the Indiana Legislature, a presidential elector who voted for Abraham Lincoln, Secretary of Navy under President Hayes, and Vice President of the Panama Canal Company.  He was twice member of Congress and declined re-election 1850.  He was proffered appointment as Charge d'Affaires to the Austria Hungarian Empire and the position of Recorder of the General Land Office, both of which he declined.  He was the author of an eight volume work entitled The Papacy and the Civil Power and an eight volume History of Protective Tariff Laws. (Hayden's Virginia Genealogies pages 132-133).  He was a first cousin of Caroline Augusta Pendleton who married William Kay.

5.  "THOMPSON, Richard Wigginton, 1809-1900" (online at the Biographical Directory of the United State Congress).

6.  WorldConnect (online at RootsWeb.com).