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

Daisey May SHOEMAKER Birth: 13 May 1874, Preble, Ohio Father: Isaac SHOEMAKER; Mother: Sarah Jane ZARINEY Source: Birth, Death, an Marriage Records, 1808-1908. Ohio. Probate Court (Preble County)

2.  1880 Census Every-Name-Index/Images (online at Ancestry.com):  Elmer SHOEMAKER (æ 2, b. OH) is living in Dayton, Montgomery Co., OH (p. 410D), with his parents, J.K. SHOEMAKER (æ 39, b. PA) and Sarrah (æ 34, b. OH), and siblings, including Daisie (æ 6, b. OH).  Can't find Estella.

3.  1890 Census:  the 1890 Census Population Schedules were destroyed.

4.  1900 Census Every-Name-Index/Images (online at Ancestry.com):  Elmer SHOEMAKER (æ 22, b. Oct 1877, OH; single; stenographer) is living in Dayton, Montgomery Co., OH (p. 147B), with his married sister, Daisey (SHOEMAKER) McDERMOTT (æ 26, b. May 1874, OH).

5.  1910 Census Index/Images (online at Ancestry.com, Image #24 of 26):  17 Trumbull Street, Xenia City (Ward 1, Precinct B), Xenia Twp., Greene Co., OH, Roll 1185 (Book 2), p. 130A, SN 13A, SD ?, ED 103, enumerated ? 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

28

*

17

132

137

Shoemaker Elmer

Head

M

W

32

M2

5

OH

OH

OH

Eng

Oiler

Cordage Mill

W

N

6

Y

Y

R

H

_________ Estella

Wife

F

W

22

M2

5

1

1

OH

OH

OH

Eng

Spinner

Cordage Mill

W

Y

52

Y

Y

_________ Mary

Dau

F

W

4

S

OH

OH

OH

None

Whitlow Alice

Servant

F

W

16

S

OH

OH

OH

Eng

Domestic

Private Families

W

N

0

Y

Y

Y

*Trumbull Street

This might be a second marriage for Elmer, but it's hard to imagine that it could be a second marriage for Estella.

6.  1920 Census Every-Name-Index/Images (online at Ancestry.com, Image #21 of 28):  503 West Main St., Xenia City (Ward B), Greene Co., OH, Roll T625_1386 (Book 2), p. 204A, SN 11A, SD 8, ED 174, enumerated 8 Jan 1920, official enumeration date 1 Jan 1920 (extracted by Diana Gale Matthiesen):¤•

1920:  for an explanation of the column headings, please see What the Numbers in the Federal Census Mean (missing columns contained no data).

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5

6

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9

10

11

12

16

17

18

19

21

23

25

26

27

28

*

503

253

277

Shaemaker D E

Head

R

M

W

43

M

Y

Y

OH

OH

OH

Y

????

R.A. Kelley

W

_________ Estella

Wife

F

W

33

M

Y

Y

OH

OH

OH

Y

None

_________ Mar?????

Dau

F

W

14

S

Y

Y

Y

OH

OH

OH

Y

None

_________ Marjorie

Dau

F

W

7

S

OH

OH

OH

None

*West Main St

7.  1930 Census Index/Images (online at Ancestry.com, Image #18 of 59):  127 Dayton Ave., Xenia City (Ward 1), Greene Co., OH, Roll 1804 (Book 1), p. 137B, SN 9B, Ed 29-23, SD 16, enumeratd 29 Apr 1930, official enumeration date 1 Apr 1930 (extracted by Diana Gale Matthiesen):¤•

1930:  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	16	17	18	19	20	24	25	26	27	28	30	31
*	127	219	236	Shoemaker D Elmer	Head	R	45	R	N	M	W	53	M	19	N	Y	OH	OH	OH	Y	Weigh Master	Cordage Mill	W	Y	Y	Sp
				_________ Estella M	Wife					F	W	42	M	18	N	Y	OH	OH	OH	Y	None
				_________ Marjorie D	Dau					F	W	18	S		Y	Y	OH	OH	OH	Y	None
*Dayton Ave

If David Elmer married at age 19, then he should have been either married, divorced, or widowed in the 1900 census, but he isn't.

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