1.  Family Group Sheet compiled by Georgie Tolleson and Betty Ann (Matthiesen) Cogliati. 

2.  Will of Col. Henry Clark, naming Henry Clark as his son. 

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

Clark, Henry

Davis, Betsy

30 May 1806

Christian Co.

4a.  Census Index:  U.S. Selected Counties, 1810 (Broderbund CD-313).  Please see my WARNING regarding use of this database (the numerical data have the genders switched). 

1810

Clark, Henry

KY

Christian Co.

p. 107

20020-2101000

4b.  1790-1870 Census Index (online at Ancestry.com):

1810

CLARK

HENRY

Christian Co.

KY

p. 107

21010-20020-00

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
2 males	9 or under	1800-1810	= ? = ?
1 male	10-15	1794-1800	= ?
1 male	26-44	1765-1784	= Henry (b. 1778/9)
2 females	9 or under	1800-1810	= Sally? = Deborah (b. 1806)
2 females	26-44	1765-1784	= Elizabeth = ?

It's hard to figure who all's living here.  Elizabeth's father died in 1797, and I suspect possibly her mother and siblings are living with them.

5.  Census Index:  U.S. Selected Counties, 1820 (Broderbund CD-314):

1820

Clark, Henery, Jr.

KY

Christian Co.

p. 40

5b.  Christian County Genealogical Society (Hopkinsville, KY).  1995.  Christian County, KY, Census Records, 1820-1830-1840.  Simmons Historical Publ., Melber, KY.  On p. 14 (of the book, not the census):

1820

Clark

Henry, Jr.

110010-11010

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
1 male	9 or under	1810-1820	= Isaac (b. 1812)
1 male	10-15	1804-1810	= ?
1 male	26-44	1775-1794	= Henry (b. 1778/9)
1 female	9 or under	1810-1820	= Daughter A?
1 female	10-15	1804-1810	= Deborah (b. 1806)
1 female	26-44	1775-1794	= Elizabeth

6a.  Census Index:  U.S. Selected Counties, 1830 (Broderbund CD-315):

1830

Clark, Henry

KY

Christian Co.

p. 46

6b.  Christian County Genealogical Society (Hopkinsville, KY).  1995.  Christian County, KY, Census Records, 1820-1830-1840.  Simmons Historical Publ., Melber, KY.  On p. 50 (of the book, not the census):

1830

Clark

Henry

100 100 010 - 000 101 100

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
1 male	4 or under	1825-1830	= ?
1 male	15-19	1810-1815	= Isaac (b. 1812)
1 male	50-59	1770-1780	= Henry (b. 1778/9)
1 female	15-19	1810-1815	= ?
1 female	30-39	1790-1800	= ?
1 female	40-49	1780-1790	= Elizabeth

7a.  Census Index:  U.S. Selected Counties, 1840 (Broderbund CD-316):

1840

Clark, Henry

KY

Christian Co.

p. 204

7b.  Christian County Genealogical Society (Hopkinsville, KY).  1995.  Christian County, KY, Census Records, 1820-1830-1840.  Simmons Historical Publ., Melber, KY.  On p. 67 (of the book, not the census):

1840

Clark

Henry

001 120 001 - 000 110 010

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
1 male	10-14	1825-1830	= ?
1 male	15-19	1820-1825	= ?
2 males	20-29	1810-1820	= ? = Isaac (b. 1812)
1 male	60-69	1770-1780	= Henry (b. 1778/9)
1 female	15-19	1820-1825	= Elizabeth French? (b. 1824/5)
1 female	20-29	1810-1820	= Julianna (b. 1818/9)
1 female	50-59	1780-1790	= Elizabeth

The newlyweds, Isaac & Julianna, appear to be living with them (Isaac does not appear as head-of-household in the county).  I would guess that Henry WAGGONER was living with them, but a male that age is living with Henry's father, Peyton WAGGONER.

8.  1850 Census (online at GenealogyLibrary.com):  District No. 2, Christian Co., KY, p. 367, 118/123, enumerated 15 Aug 1850 (extracted by Diana Gale Matthiesen):

Henry Clark	71	M	Farmer	6500	NC
Elizabeth "	61	F			Ky
Elizabeth D. French	25	F			Ky
William L. French	18	M	Carpenter		Va
Henry C. Wagoner	21	M			Ky	*
Merredith Beck	25	M	Overseer		Va
*deaf and dumb

Elizabeth CLARK must be fibbing about her age.  William L. FRENCH was their grandson through their daughter Deborah, who died in 1835.  Was Elizabeth FRENCH also Deborah's child?  Henry C. WAGGONER was their grandson through their daughter Sarah; Henry WAGGONER's parents had moved to Missouri by 1850.

9.  Mary Clark's web site:  Genealogy of the Clark Family.