1.  LDS.  Family Search: Internet Genealogy Service:  IGI - International Genealogical Index (online at FamilySearch.org).

Valentine CRIPP Spouse: Emily WITHERS Marriage: 13 Nov 1852, Perry, Ohio Spouse: Marriage Records, 1818-1952. Ohio. Probate Court (Perry County)

2.  1850 Census Index/Images (online at Ancestry.com; Image #34 of 44):  Thorn Twp., Division No. 119, Perry Co., OH, p. 413B/825, 1346/1346, enumerated 26 Oct 1850 (extracted by Diana Gale Matthiesen):

Henry Boyer Jn	33	M	Farmer	800	Ohio
[Henry's wife and children]
Emily Weathers	20	F			Va
John Rarick	21	M	Farmer		Ohio

Valentine is still living with his parents in 1850.

3.  AIS (Accelerated Index System) 1860 Census Index (online at Ancestry.com):  not found, but there are no Perry Co., OH, records in the database.

4a.  Family Quest Archives:  Ohio 1870 Census Index.  Heritage Quest ACD-0014:

Surname	Given name	Age	Sex	Race	Birth Place	County	Locality	Roll	Pg
Cupp	Valentine	42	M	W	OH	Perry	Thorn Twp	1255	230

4b.  1870 Census Images (online at Ancestry.com; Image #461 of 486):  Thornville P.O., Thorn Twp., Perry Co., OH, p. 230A, PN 19, 141/148, enumerated 13 Jun 1870 (extracted by Diana Gale Matthiesen):

Cupp Valentine	42	M	W	Farm Laborer		500	Ohio
____ Emla	41	F	W	Keeping House			Virginia
____ John E	13	M	W	at Home			Ohio
____ Sarah J	12	F	W	at Home			Ohio
____ Laura Ida	9	F	W	at Home			Ohio
____ George Simon	2	M	W	at Home			Ohio
Foster Emanuel	20	M	W	Farm Laborer			Ohio
Wethers Lucretia	43	F	W	House Keeper			Ohio

This is the only CUPP household in the county.

5.  1880 United States Census and National Index (LDS Family History Resource File: CD-ROM Library):

Census Place: Thorne, Perry, Ohio
Source: FHL Film 1255057; NARA Film T9-1057; Pg 37C
	Relation	Sex	Marr	Race	Age	Birthplace	Occupation	Fa	Mo
Valentine CUPP	Self	M	M	W	52	OH	Farmer	PA	PA
Emily CUPP	Wife	F	M	W	51	VA	Keeping House	VA	VA
John E. CUPP	Son	M	S	W	22	OH	Farm Laborer	OH	VA
Sarah Jane CUPP	Dau	F	S	W	21	OH	At Home	OH	VA
Laura I. CUPP	Dau	F	S	W	19	OH	Servant Girl	OH	VA
George CUPP	Son	M	S	W	12	OH	Farm Laborer	OH	VA
Lucretia WILKERS	SisterL	F	S	W	53	OH	Keeping House	OH	OH

If Lucretia is Emily's sister, how can they have parents born in different places?  And if Lucretia is older than Emily, shouldn't she be the one born in VA and Emily the one born in OH?  This is the only CUPP household in the county.