There was a John C. HENSON in the 1840 Census of Christian Co. and a John M. HENSON in the 1840 Census of Todd Co., but no HENSON households in either county in 1850.  The only HENSON in the 1850 Census of either county was a six-year-old girl (Sally, b. KY), who was, significantly, living with Manliss & Frances TUCKER.

1a.  Jordan R. Dodd, ed.  1993.  Kentucky Marriages:  Early to 1850.  Liahona Research, Orem, UT (Broderbund CD-229):  not found.

1b.  Marriage Index:  Kentucky, 1851-1900.  Liahona Research, Orem, UT (Broderbund CD-233):

Hightower, G.W.

Deason, Sarah

Mar 5, 1874

Todd Co.

It is said this is the father, and he son was still a bit young to be marrying.

2.  1850 Census Index/Microfilm (online at GenealogyLibrary.com):  District No. 2, Christian Co., KY, p. 388B, 414/450, enumerated 11 Sep 1850 (extracted by Diana Gale Matthiesen):

George W. Hightower	25	M	Merchant	50	Virginia
Serilda       "	23	F			"
Mary E        "	1	F			"
James Y. Kelly	24	M	Shoemaker		"

3a.  Census Index:  U.S. Selected Counties, 1860 (Broderbund CD-318):

1860

Hightower, G.W.

KY

Todd Co.

Elkton P.O.

p. 719

3b.  A record from the 1860 Todd County, Kentucky, Federal Census (online at the HIGHTOWER Surname Page at the Todd County KYGenWeb site):

Household 337-337, HIGHTOWER G.W., 33, m, w, Farmer, 330, 100, Ky Sarilda, 28, f, w, Ky  M.E., 10, f, w, Ky  G.W., 1, m, w, Ky

This age and birthplace are correct for George.  It's possible Sarilda is now fibbing about her age, so we can't be certain which age is correct for her.

3c.  HIGHTOWER in the 1860 Federal Census (extracted by Steve Martonak and online at his HIGHTOWER Genealogy and Family Roots> web site [link died]):

(written)Page No: 49			Township:				County: Todd				State: KY
Date: 02 Jul 1860					Asst Marshall: R F ALISON
Post Office: ELKTON				Dwelling No: 337		Family No: 337			Page No: 719
A	B	C	D	E	F	G	H	I	J	K	L	M N
HIGHTOWER	G W	35	M	.	Farmer	330	100	KY	.	.	X	.
HIGHTOWER	Sanlda?	28	F	.	.	.	.	KY	.	.	X	.
HIGHTOWER	M E	10	F	.	.	.	.	KY	.	.	.	.
HIGHTOWER	G W	1	M	.	.	.	.	KY	.	.	.	.
Neighbors: SULLIVAN, MOBLEY, JONES, JONES, STOKES, HIGHTOWER
HIGHTOWER, HIGHTOWER, RUDD, RUDD, FRANCIS, FRANCIS, HANN
Notes:

4.  Anon.  1986.  Family Histories:  Christian County, Kentucky, 1797-1986.  Christian County Genealogical Society, Hopkinsville, KY.  An excerpt on "DEASON" on pp. 150-151.

5.  WorldConnect (online at RootsWeb.com).

6.  Broderbund.  World Family Trees.  Vol. 5, Pedigree #1090.  Says George HIGHTOWER, s/o Abijah, married Surilda HENSON and Sarah F. DEASON.