Eve's birth and death dates appear to be from a tombstone.  I suspect Eve was fibbing about her age late in life and that she was born earlier.

1.  Jordan R. Dodd, ed.  1998.  Marriage Index: Ohio, 1851-1900.  Liahona Research, Orem, UT (Broderbund CD-236):

Coleman, Valentine

Knabb, Maglana

3 Nov 1861

Ashland Co.

2.  1820 Census Index and Digital Images (online at Ancestry.com; Image #1 of 4; extracted by Diana Gale Matthiesen):

1820

PA

York Co.

East Manchester Twp.

p. 67

Valentine Coleman Junr

100200-20200-0-000

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
1 male	9 or under	1810-1820	= Joseph (b. 1820) = John (b. 1818)
2 males	19-25*	1794-1801	= Valentine III (b. 1788) = ?
2 females	9 or under	1810-1820	= Mary (b. 1817) = ?
2 females	16-25	1794-1804	= Catharine = ?
*In the 1820 Census, the third column is age class 16-18 and the fourth column is age class 16-25; therefore, any individual in column three is duplicated in column four.  By subtracting the number in column three from the number in column four, you can create an age class "19-25."

The numbers here are off, but surely this is our subject.  Obviously, another couple is living with them, and the "extra" daughter appears to be theirs.  Listed next to Valentine's brother, John COLEMAN, who is next to their father, Valentine COLEMAN (II).

3.  1830 Census Index and Digital Images (online at Ancestry.com; Image #3 of 11; extracted by Diana Gale Matthiesen):

1830

OH

Crawford Co.

Whetstone Twp.

p. 177

Fetty Coolman

311 000 100 - 010 100 100

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
3 males	4 or under	1825-1830	= Valentine IV (b. 1826-29)
1 male	5-9	1820-1825	= Joseph (b. 1820)
1 male	10-14	1815-1820	= John (b. 1818)
1 male	40-49	1780-1790	= Valentine III (b. 1788)
1 female	5-9	1820-1825	= Daughter A
1 female	15-19	1810-1815	= Mary (b. 1817)
1 female	40-49	1780-1790	= Eve (b. 1798?)

I wouldn't have guessed this was our subject, except that Valentine IV is said to have been born in Crawford County, and I could find no other Valentine COLEMAN in Ohio (the one in PA is Valentine II).  All I can guess is that Valentine's nickname was "Vetty" and the enumerator heard it as "Fetty."  Listed next to Valentine's brother, John "COOLMAN."

4.  1840 Census Index and Digital Images (online at Ancestry.com; Image #3 of 12; extracted by Diana Gale Matthiesen):

1840

OH

Delaware [now Marion] Co.

Marlborough [now Waldo] Twp.

pp. 248B-249A

Valentine Collman

002 020 010 - 220 100 100

0401000

These data indicate:

No. & Sex	Age Class	Therefore Born	Individuals Inferred
2 males	10-14	1825-1830	= Valentine IV (b. 1826-29)
2 males	20-29	1810-1820	= Joseph or John
1 male	50-59	1780-1790	= Valentine III (b. 1788)
2 females	4 or under	1835-1840	= Caroline (b. 1839/40) = Peggy (b. 1837/8)
2 females	5-9	1830-1835	= Catharine (b. 1833/4) = Julia (b. 1832)
1 female	15-19	1820-1825	= Daughter A
1 female	40-49	1790-1800	= Eve (b. 1798?)
4	persons engaged in agriculture
1	person engaged in manufactures and trades

5.  1850 Census Index/Images (online at Ancestry.com; Image #5 of 24):  Waldo Twp., Marion Co., OH, p. 3A, 29/29, enumerated 5 Sep 1850, official enumeration date 1 Jun 1850 (extracted by Diana Gale Matthiesen):

Valentine Coleman	61	M		Farmer	4000	Pa
Eve	57	F				Pa
Catharine Coleman	16	F				O
Peggy	12	F				O
Caroline	10	F				O
Wilson S	8	M				O
Valentine Coleman	23	M		Farmer		O
Elizabeth	25	F				O

Elizabeth must be the junior Valentine's wife.

6.  1860 Census Images (online at Ancestry.com; Image #4 of 28):  Waldo P.O., Waldo Twp., Marion Co., OH, p. 401B, PN 78, 562/559, enumerated 6 Jul 1860, official enumeration date 1 Jun 1860 (extracted by Diana Gale Matthiesen):

Valentine Coleman	71	M		Farmer	7000	1200	Penn
Eve          "	62	F					Do
Wilson S     "	17	M		Farmer			Ohio

Livng next door to Valentine's brother, John COLEMAN

7.  1870 Census Images (online at Genealogy.com; Image #4 of 8):  Waldo P.O., Village of Waldo, Marion Co., OH, p. 211B, PN 4, enumerated 8 Jun 1870, official enumeration date 1 Jun 1870 (extracted by Diana Gale Matthiesen):¤

25	27	Coleman Valentine	81	M	W	Farmer	500	1400	Pennsylvania
		_______ Magdalina	62	F	W	Keeping House			France
	28	Corbin [Elijah]	55	M	W	Day laborer			Pennsylvania
		______ Elizabeth	53	F	W	Keeping House			"
		______ Albert E	16	M	W				Ohio
		______ Francis M	14	M	W				"

Valentine COLEMAN's son, Wilson S. COLEMAN, married Maria Ann STRAUB, sister of George W. STRAUB, who married Sarah E. CORBIN, daughter of Elijah & Elizabeth (ELY) CORBIN.  In other words, the COLEMANs and CORBINs are in-laws.

8.  LDS.  Family Search: Internet Genealogy Service: Pedigree Resource File (index to CDs, online at FamilySearch.org).

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