1.  Louisa Co., Va., Marriage Bonds, 1769-1856.  Original typescript by the "Genealogical Society, 1936" (online in the Archives of the THOMPSON-L mailing list at RootsWeb.com):

John Thompson

Sarah Ragland

March 28, 1789

Samuel Ragland, grandfather

2.  Census Index:  U.S. Selected Counties, 1790 (Broderbund CD-311):  VA census destroyed; no KY census taken.

3.  Census Index:  U.S. Selected Counties, 1800 (Broderbund CD-312):  KY census destroyed; see tax rolls below.

4.  1810:

5.  1820:

6.  U.S. Census, 1830 (extracted by A. Robert Matthiesen; see 1830 Table):  There is no James Thompson/Thomson listed in Christian Co. in 1830, but surely he was there.  I'm inclined to think he must have been living with someone else who was head-of-household (e.g., his parents or a brother).  There is a John Thompson in Christian Co. in 1830 whose household appears to consist of an older couple, a younger couple, an older girl and a little girl, which would easily account for James and Elizabeth and their daughter.  This is the only Thompson family in Christian Co. in 1830 into which James, Elizabeth, and "S.A." could fit, so we may very well have determined the name of James' father.  On the other hand, this scenario is entirely hypothetical.  It may be wrong. 

John Thompson

000 001 001 - 100 110 001

Christian Co., KY

p. 40

These data indicate

No. & Sex	Age Class	Therefore Born	Individuals Inferred
1 male	30-39	1790-1800	= James (b. 1797/8)
1 male	60-69	1760-1770	= John (b. 1766)
1 female	4 or under	1825-1830	= S.A. (b. 1829/30)
1 female	15-19	1810-1815	= Martha (b. 1815)
1 female	20-29	1800-1810	= Elizabeth (b. 1809)
1 female	60-69	1760-1770	= Sarah (b. 1769)

James is son of John & Sarah, and Elizabeth is his wife.  "S.A." is the daughter of James & Elizabeth.  Martha is the youngest child of John and Sarah; she was the last of their children to marry, in 1832.

7.  Anon.  1991.  The 1795 Census of Kentucky [as constructed from tax lists].  T.L.C. Genealogy, Miami Beach, FL (said to include every extant tax list in the state of Kentucky for the year 1795):

Name	County
Thomason, Ann	Scott
Thomason, Samuel	Scott
Thompson, Gilbert	Scott
Thompson, John	Scott
Thomsson, John	Scott
Thomsson, Lentexter(?)	Scott
Thomsson, Richard	Scott
Tompson, Rod.	Scott
Tompson, Ron (?)	Scott
Tompson, _hods (?)	Scott

These are all the THOMPSONs/&c. in Scott Co.  When researching "John THOMPSON," it's always difficult to know when you have found your subject, but the presence of John's brother, Rhodes/Rodes THOMPSON (who d. 1845 in Scott Co., KY), makes it fairly certain our subject is one of the Johns named on this list.

.  Census Index:  U.S. Selected Counties, 1800 (Broderbund CD-312):  KY census destroyed.

1800 Tax List

Thompson, John

KY

Scott Co.

Other THOMPSONs in county were:  David, Gilbert, Jarvis, Martin, Robert, Rodes, and Watt.

.  Garrett Glenn Clift.  1977.  Kentucky Obituaries, 1787-1854.  Genealogical Publ. Co., Baltimore (reprinted from the Register of the Kentucky Historical Society) — as cited in the Archives of THOMPSON-L mailing list:

Col. John Thomson, of Christian Co., formerly of Scott Co., Died 29 Oct 1834 "at an advanced age." (Lexington Observer & Reporter, 19 Nov 1834)

.  LDS.  Family Search: Internet Genealogy Service (online):  International Genealogical Index (IGI).

John Thompson m. Sarah Ragland 31 Mar 1789, Louisa Co., VA

.  Margaret Miriam Strong.  1928.  Genealogy of the Ragland Families.  Self-published, St. Louis, MO (online at Genealogy.com).  On p. 59:

John Thompson, born in Virginia, probably Louisa County, Jan. 7th, 1776, married March 31st, 1789, Miss Sarah Woodson Ragland, of Virginia, perhaps Lawden County.  They moved to Kentucky, starting Oct. 20th, 1789, and arrived at Georgetown [Scott Co.], Kentucky, Dec. 1st, 1789. Their children were: James, George, William and Clifton. (See later.)  Mary married Dr. Gurdon Flower Salton stall.  Nancy married William Asa Smith, her first cousin.  Louisa married Mr. Steel.  Sarah married, first time, McGarvey; second time, Dr. Gurdon Flower Saltonstall.  Martha married Gabriel Long. Great-grandmother of George C. Long, of Hopkinsville, Kentucky.

.  He was living in Kentucky according to Register of the State Historical Society of Kentucky.  36: 42, 43: 365. (Raynond A. Thomson, #2 Belgrave Court, Wichita Falls, TX 76309.)

.  Archives of the THOMPSON-L mailing list (online at RootsWeb.com).