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

Miller, Daniel

Stroupe, Catharine

26 Apr 1832

Columbiana Co.

2.  1840 Census Index/Images (online at Ancestry.com, Image #19-20 of 24; extracted by Diana Gale Matthiesen):¤•

1840

OH

Columbiana Co.

Knox Twp.

pp. 23A-23B

Ln. 24

Daniel Miller

101 001 000 - 120 010 000

_______

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
1 male	4 or under	1835-1840	= Son A
1 male	10-14	1825-1830	= ?
1 male	30-39	1800-1810	= Daniel
1 female	4 or under	1835-1840	= Lydia Ann (b. 1839/40)
2 females	5-9	1830-1835	= Mary (b. 1834/5) = Daughter A
1 female	20-29	1810-1820	= Catharine
1	person employed in agriculture

The older boy was born before our subject's were married.  I would suspect Daniel had a prior wife, but he does not appear in the 1830 census, nor is there a record for an earlier marriage for a Daniel MILLER in Columbiana County.

3.  1850 Census Index/Images (online at Ancestry.com, Image #17 of 51):  Knox Twp., Columbiana Co., OH, Roll M432_669, p. 282A, 131/131, enumerated 29 Jul 1850, official enumeration date 1 Jun 1850 (extracted by Diana Gale Matthiesen):

Daniel Millar	38	M		Farmer	2000	Ohio
Catharine Millar	35	F				Pennsylvania
Mary Millar	15	F				Ohio
Lydia Ann Millar	11	F				Ohio
John D Millar	6	M				Ohio
Catharine Millar	5	F				Ohio
Emanuel Millar	3	M				Ohio
Daniel C Millar	3	M				Ohio
Emily Millar	8/12	F				Ohio

Listed three households from Daniel's widowed father, "Staple" MILLAR.

4.  WorldConnect / Ancestry World Trees (online at RootsWeb.com/Ancestry.com).