Unless Elizabeth's age in the 1880 census is wrong (see below), she was born before Champ & Lockey married, which suggests Champ had a prior wife, which is supported by the age difference between Champ and Lockey.

1a.  Jordan Dodd, comp.  2001.  Kentucky Marriages, 1851-1900.  Provo, UT (online at Ancestry.com):

S. C. Wier

Lockey Owen

28 May 1874

Webster Co.

1b.  Kentucky Marriages, 1785-1979 (online at familysearch.org):

Groom's Name:	S. E. Ware
Groom's Birth | Age:	1848 | 26
Groom's Birthplace:	Kentucky
Groom's Marital Status:	Single
Bride's Name:	Locky Owen
Bride's Birth | Age:	1856 | 18
Bride's Birthplace:	Kentucky
Bride's Marital Status:	Single
Source Film:	1004531

2.  1850 Census Every-Name-Index/Images (online at Ancestry.com):  Samuel WIER (æ 1, b. KY) is living in Hopkins Co., KY (p. 82BB), with his parents, Thomas WIER (æ 22, b. VA) & Nancy (æ 20, b. KY), plus others.

3.  1860 Census Every-Name-Index/Images (online at Ancestry.com):  Samuel C. WIER (æ 10, b. KY) is living in Hopkins Co., KY (p. 673), with his father, Thomas T. WIER (æ 31, b. VA), et al.; listed next to a RAMSEY family.  Lockey OWEN (æ 4, b. TN) is living in Wilson Co., TN (p. 365B), with her parents, W.M. OWEN (æ 28, b. TN) & Elizabeth (æ 20, b. TN), plus two brothers, John (æ 2, b. TN) and William (æ 8/12, b. TN).

4.  1870 Census Every-Name-Index/Images (online at Ancestry.com):  Champ WIRE (æ 21, b. KY; sawmill worker) is living in a hotel in Dixon, Webster Co., KY (p. 201B).  Can't find Lockey or any of her family members.

5.  1880 Census Every-Name-Index/Images (online at Ancestry.com, Image #16 of 66):  Dixon Dist., Webster Co., KY, Roll 446, p. 34D, PN 16, SD 1, ED 25, enumerated 9  Jun 1880, official enumeration date 1 Jun 1880 (extracted by Diana Gale Matthiesen):

1880:  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

13

24

25

26

6

6

Wier Champion

W

M

20

/

Farm Laborer

Ky

Va

Ky

____ Locky

W

F

27

Wife

/

Keeps House

Ky

Tenn

Tenn

____ Elizabeth

W

F

7

Dau

/

Ky

Ky

Ky

____ Willy T

W

M

4

Son

/

Ky

Ky

Ky

____ James

W

M

10/12

Aug

Son

/

Ky

Ky

Ky

Wier Mary

W

F

18

Sister

/

Ky

Va

Ky

Champ should be age 31, not 20.  Lockey should be age 23, not 27, and she was born in TN, not KY.  Unless Elizabeth's age is wrong, she was born before Champ & Lockey married, which suggests Champ had a prior wife, which is supported by the age difference between them.

6.  1890 Census:  the 1890 Census Population Schedules were destroyed.

7.  1900 Census Every-Name-Index/Images (online at Ancestry.com, Image #1 of 12):  South Sugar Loaf Twp., Cleburne Co., AR, Roll 54, p. 271A, SN 7, SD 2, ED 19, enumerated 7 Jun, 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

11

12

13

14

15

19

20

22

23

24

25

26

27

28

128

128

Davis Lockey L

Head

W

F

Mar 1857

43

Wd

6

4

TN

TN

TN

Y

Y

Y

O

F

F

30

_____ William

Son

W

M

Aug 1876

23

S

KY

TN

TN

Farmer

0

Y

Y

Y

_____ Smith

Son

W

M

Jan 1879

21

S

MO

TN

TN

Y

Y

Y

_____ Emmet C

Son

W

M

Mar 1891

9

S

AR

TN

TN

N

N

Y

_____ Richard B

Son

W

M

Sep 1895

4

S

AR

TN

TN

N

N

Y

William WIER-DAVIS is Lockey's son from her first marriage; William's father was born in KY.  The father of the three DAVIS boys was born in MO.  Smith DAVIS is her stepson; his mother was born in MO.  A family bible says Smith was born in Jan 1880, Emmitt was born in Mar 1890, and Richard was born in Oct 1896. 

8.  1910 Census Every-Name-Index/Images (online at Ancestry.com, Image #1 of 15):  Private Road, Heber Twp., Cleburne Co., AR, Roll 46 (Book 2), p. 90A, SD 2, ED 9, enumerated 15 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	29
3	3	Davis Lockey Mrs	Head	F	W	54	Wd	10	6	4	TN	TN	TN	Eng	House work			N	0	Y	Y		O	F	F	3
		Weir William	Son	M	W	33	S				KY	KY	TN	Eng	Farm	Farm	OA	N	0	Y	Y
		Davis Clark	Son	M	W	20	S				AR	MO	TN	Eng	Laborer	Farm	Emp	N	0	Y	Y
		_____ Bryon	Son	M	W	13	S				AR	MO	TN	Eng	None					Y	Y	Y

9.  1920 Census Every-Name-Index/Images (online at Ancestry.com):  Lockie L. DAVIS (æ 67, b. KY) is living in Heber Twp., Cleburne Co., AR (p. 265A), with her married son, William T. WEIR (æ 42, b. KY).

10.  1930 Census Every-Name-Index/Images (online at Ancestry.com):  Lockey not found.

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