1.  Anon.  1966.  Marriage Index:  Ohio, 1789-1850.  Liahona Research, Orem, UT (Broderbund CD-400):

Doughman, Henry	Stauder, Ann	22 Sep 1836	Clermont Co.
Doughman, Henry	Riggs, Nancy	28 Dec 1838	Clermont Co.

2.  1840 Census Index and Digital Images (online at Ancestry.com; Image #17 of 22; extracted by Diana Gale Matthiesen):

1840

OH

Clermont Co.

Goshen Twp.

Village of Goshen

264B

Henry Doughman

100 110 - 000 020

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
1 male	4 or under	1835-1840	= John (b. 1839/40)
1 male	15-19	1820-1825	= ?
1 male	20-29	1810-1820	= Henry (b. 1812/3)
2 females	20-29	1810-1820	= ? = Nancy (b. 1815/6)

Living next door to Henry's first cousin, Stephen STROUP, who is just 15 and living alone.  It's hard to say who the teenage male and female in her 20s living with Henry & Nancy are, but Stephen's mother has died and none of her children are living with their widowed father. 

3.  1850 Census Index/Images (online at Ancestry.com; Image #9 of 47):  District No. 23, Goshen Twp., Clermont Co., OH, p. 146A/287, 1336/1336, enumerated 10 Oct 1850, official enumeration date 1 Jun 1850 (extracted by Diana Gale Matthiesen):

Henry Doughman	37	M		Farmer	300	O
Nancy Doughman	34	F				O
John H Doughman	10	M				O
Benton Doughman	7	M				O
Thomas J Doughman	5	M				O
Calvin S Doughman	3	M				O

Living next door to Benjamin RIGGS (æ 36, b. OH, wife Elizabeth BISHOP).

4.  1860 Census Images (online at Ancestry.com; Image #24 of 46):  Branch Hill P.O., Goshen Twp., Clermont Co., OH, p. 298, PN 99, 716/746, enumerated 1 Aug 1860, official enumeration date 1 Jun 1860 (extracted by Diana Gale Matthiesen):

Henry Doughman	47	M		Constable	1000	350	Ohio
Mary      "	30	F					"
Jefferson "	15	M					"
Calvin    "	13	M					"
W Elmore  "	5	M					"

5.  1870 Census Images (online at Ancestry.com; Image #4 of 7):  Goshen P.O., Village of Goshen, Goshen Twp., Clermont Co., OH, p. 87B, PN 4, 32/33, enumerated 2 Jun 1870, official enumeration date 1 Jun 1870 (extracted by Diana Gale Matthiesen):

Doughman Henry	57	M	W	Miller	1000	175	Ohio
________ Mary J	40	F	W	Keeping House			Ohio
________ Elmore	15	M	W	At Home			Ohio
________ Almadel	8	F	W	At Home			Ohio

Living next door to son, Thomas Jefferson DOUGHMAN. 

6.  1880 United States Census and National Index (LDS Family History Resource File: CD-ROM Library):

Census Place: Goshen, Clermont, Ohio
Source: FHL Film 1255000; NARA Film T9-1000; Pg 92B
	Relation	Sex	Marr	Race	Age	Birthplace	Occupation	Fa	Mo
Henry DOUGHMAN	Self	M	M	W	67	OH	Works On Farm	PA	PA
Mary J. DOUGHMAN	Wife	F	M	W	50	OH	Keeping House	WV	NJ
Alma A. DOUGHMAN	Dau	F	S	W	18	OH	At Home	OH	OH
Nancy DOUGHMAN	GDau	F	S	W	5	IL		OH	OH