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

Oliver M. CUPP Spouse: Clara E. BOWERS Marriage: 28 Nov 1872, Fairfield, Ohio Source: Marriage Records, 1803-1880. Ohio. Probate Court (Fairfield County)

2a.  1880 United States Census and National Index (LDS Family History Resource File: CD-ROM Library):¤•

Census Place: Canal Winchester, Franklin, Ohio
Source: FHL Film 1255015; NARA Film T9-1015; Pg 287C
	Relation	Sex	Marr	Race	Age	Birthplace	Occupation	Fa	Mo
Oliver M. CUPP	Self	M	M	W	31	OH	Retired Farmer	--	--
Clara E. CUPP	Wife	F	M	W	25	OH	Keeping House	--	--
Edward M. CUPP	Son	M	S	W	5	OH		OH	OH
James A. CUPP	Son	M	S	W	3	OH		OH	OH
Lottie S. CUPP	Dau	F	S	W	2	OH		OH	OH
James A. BOWERS	Other	M	S	W	22	OH	Works On Brick Yard	OH	OH

Retired farmer?  Retired at 31?!  James BOWERS is presumably Clara's brother.

2b.  1880 Census Images (online at Ancestry.com; Image #19 of 36):  Canal Winchester, Madison Twp, Franklin Co., OH, p. 287C, PN 19, SD 5, ED 14, 174/180, enumerated 15 Jun 1880, official enumeration date 1 Jun 1880:  It does, indeed, say Oliver is a "Retired Farmer"; James BOWERS is listed as a "Boarder."

3.  1890 Census:  the 1890 population schedules were destroyed.

4.  1900 Census Index/Images (online at Genealogy.com; Image #4 of 24):  Columbia Street, Lithopolis, Bloom Twp., Fairfield Co., OH, p. 47B, SN 2, SD 11, ED 5, enumerated 2 Jun 1900, official enumeration date 1 Jun 1900 (extracted by Diana Gale Matthiesen):¤•

1900:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

19

20

21

22

23

24

25

26

27

46

48

Cupp Oliver

Head

W

M

June 1848

51

M

28

OH

OH

OH

Horse Trader

0

Y

Y

Y

O

M

H

____ Ellen

Wife

W

F

Nov 1854

46

M

28

6

6

OH

OH

OH

House Keeper

Y

Y

Y

____ Eva

Dau

W

F

July 1882

17

S

OH

OH

OH

Y

Y

Y

____ Earl

Son

W

M

Feb 1886

14

S

OH

OH

OH

At School

9

Y

Y

Y

____ Owen

Son

W

M

Aug 1890

9

S

OH

OH

OH

At School

9

Y

Y

Y

Listed two households from George FOOR, in one direction; and, in the other direction, three households from Sanford FOOR.

5.  1910 Census Index/Images (online at Genealogy.com; Image #27 of 40):  Lithopolis Village, Bloom Twp., Fairfield Co., OH, Roll 1178 (Book 2), p. 194A, SN 3, SD 10, ED 53, enumerated 17/18 Apr 1910; official enumeration date 15 Apr 1910 (extracted by Diana Gale Matthiesen):¤•

1910:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).
1	2	3	4	5	6	7	8	9	10	11	12	13	14	17	18	19	20	21	22	23	24	25	26	27	28
52	52	Cupp Oliver	Head	M	W	60	M1	30			OH	OH	OH	Eng	Laborer	??? farm	W	N	0	Y	Y		O	F	H
		____ Ellen C	Wife	F	W	54	M1	30	7	6	OH	OH	OH	Eng	None					Y	Y
		____ Owen	Son	M	W	18	S				OH	OH	OH	Eng	None					Y	Y	Y

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

7.  Emails from Judith Winzenz, including the following:

I was in Lithopolis Cemetery in Ohio and took one of Oliver M. and Clara E. Cupp's tombstone.  Clara's birth year is 1855 and death date is 1926...  Their son's tombstone contains this information: Owen Stanley Cupp was born 24 Aug 1892 and died 19 Feb 1947.  He was at PVT in 158 DEPOT BRIGADE.  Earl Cupp's Tombstone says he was born in 1887 and died in 1921.  Another nearby tombstone is of Albert Cupp b. 1875, d. 1924.