1a.  Jordan R. Dodd, ed.  1998.  Marriage Index: Ohio, 1851-1900.  Liahona Research, Orem, UT (Broderbund CD-236):  not found.

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

George W. CUP Spouse: Hannah BAIRD Marriage: 24 Sep 1859, Wood Co., OH Source: Marriage Records, 1820-1929. Ohio. Probate Court (Wood County)

2.  1860 Census Images (online at Ancestry.com; Image #6 of 31):  Woodberry P.O., Bloom Twp., Wood Co., OH, p. 296A, PN 161, 1194/1178, enumerated by 7 Aug 1860, official enumeration date 1 Jun 1860 (extracted by Diana Gale Matthiesen):¤•

Geo W Cup	25	M		Thrasher		400	O
Hannah	19	F					"

Where's Wilametta?  Was she really born in 1860?

3.  1870 Census Images (online at Ancestry.com; Image #13 of 34):  West Millgrove P.O., Perry Twp., Wood Co., OH, p. 444A, PN 13, 101/103, enumerated 7 Jul 1870, enumeration date 1 Jun 1870 (extracted by Diana Gale Matthiesen):¤•

Cupp G W	35	M	W	Farmer		400	Ohio
____ Hannah	29	F	W	Keeping House			Ohio
____ Willmetta ?	10	F	W	Attending School			Ohio
____ Willis F	8	M	W	Attending School			Ohio
____ Rebecca L	2	F	W				Michigan

Willis's middle initial is definitely "F."  Listed next to Hannah's parents, Ora & Rebecca (RANDALLS) BAIRD.

4.  LDS.  Family Search: Census Records: 1880 United States (online at FamilySearch.org):  can't find, except possibly Rebecca as an orphan. 

5.  1890 Census:  the 1890 Population Schedules were destroyed.

6.  Elmer McCullough & Lynette McCullough, eds.  1988. The History of the Bloomdale, Ohio, Area Families.  Whipperwill Publications, Evansville, IN (courtesy of Bill Oliver).  On p. 4:

Hannah [Baird, dau of Ora A BAIRD and Rebecca RANDALLS], born September 28, 1841, married Washington Cupp, and died in Perry township.

7.  LDS.  Family Search: Internet Genealogy Service:  AF - Ancestral File (online at FamilySearch.org).

8.  Messages in the CUPP Family Genealogy Forum (online at GenForum.com).