1a.  England & Wales FreeBMD Marriage Index: 1837-1915 (online at Ancestry.com):

MARRIAGES registered in April, May, and June 1870.
p.		District	Vol	Page
71	Evans Edward	Bridgend	11a	667
98	Harris Ann	Bridgend	11a	667

1b.  Wales, Glamorgan, Parish Register, Marriages, 1837-1922 (online at familysearch.org):

Name:	Edward Evans
Event:	Marriage
Event Date:	9 Apr 1870
Event Place:	Llangynwyd, Glamorgan, Wales
Gender:	Male
Marital Status:	Single
Father:	Evan Evans
Spouse:	Ann Harris
Spouse's Marital Status:	Single
Spouse's Father:	Henry Harris
Digital Folder:	004173995

2.  1871 Census of England and Wales Every-Name-Index/Images (online at Ancestry.com, Image #13 of 47):  Town of Higher Llangynwyd, Llangynwyd Civil Parish, Llandaff Ecclesiasticl Parish, Neath Reg. Dist., Margam Sub-dist., Glamorgan, Wales, ED 11, Piece 5425, Folie 40, p. 12, official enumeration date 2 Apr 1871 (extracted by Diana Gale Matthiesen):

1871:  for an explanation of the column headings, please see What the Numbers in the British Censuses Mean (missing columns contained no data).
1	2	3a	4	5	6	7a	7b	8	9
63	Picton Place	/	Edward Evans	Head	Mar	20		Coal Miner	Glamorgansh.	Llangynwyd
			Ann Evans	Wife	Mar		19		"	"

3.  1881 Census of England and Wales Every-Name-Index/Images (online at Ancestry.com, Image #19 of 43):
, official enumeration date 3 Apr 1881 (extracted by Diana Gale Matthiesen):

1881:  for an explanation of the column headings, please see What the Numbers in the British Censuses Mean (missing columns contained no data).
1	2	3a	3b	4	5	6	7a	7b	8	9	10
-	-	/		-	Head	Mar	-		-	-
				-	Wife	Mar		-	-	-
				-	-			-	-	-
				-	-		-		-	-
				-	-			-	-	-
				-	-	-	-	-	-	-
				-	-	-	-	-	-	-
				-	-	-	-	-	-	-
				-	-	-	-	-	-	-
				-	-	-	-	-	-	-
				-	-	-	-	-	-	-
				-	-	-	-	-	-	-

4.  1891 Census of England and Wales: Every-Name-Index/Images (online at Ancestry.com, Image #26 of 49):  7 High St., Town of Maesteg, Llangynwyd Ecclesiastical Parish, Cwmdu Civil Parish, Glamorgan, Wales, p. 25/68, official enumeration date 3 Apr 1891 (extracted by Diana Gale Matthiesen):

1891:  for an explanation of the column headings, please see What the Numbers in the British Census Mean (missing columns contained no data).

1

2

3

6

7

8

9

10

11

13

15

17

115

7 High St

1

Edward Evans

Head

M

40

Blocklayer

+

Glamorgan

Llangynwyd

Welsh

Ann       Do

Wife

M

39

"

"

"

Jennet A  Do

Daug

S

19

Dress Maker

"

"

"

Elizabeth Do

Daug

S

17

"

"

"

Henry     Do

Son

12

Doorboy at Colliery

+

"

"

"

Joannah   Do

Daug

5

"

"

"

Annie     Do

Daug

1

"

"

"

Evan Evans

Father

Widower

65

Living on his Means

"

"

"

"Coalier" (sic) was added in another pen and hand.

5.  1901 Census of England and Wales: Every-Name-Index/Images (online at Ancestry.com, Image #18 of 57):  Maesteg Town, Mid-Glamorgan Parliamentary Div., Maesteg Urban Dist. (North Ward), Llangynwyd or Maesteg with St. Cynwyd Ecclesiastical Parish, Higher Llangynwyd Civil Parish, Bridgend Registration District, Administrative County of Glamorgan, Wales, ED 3, Piece 5040, Folio 79, p. 17, official enumeration date 31 Mar 1901 (extracted by Diana Gale Matthiesen):

1901:  for an explanation of the column headings, please see What the Numbers in the Welsh Census Mean (missing columns contained no data).

1

2

3

8

9

10

11

12

13

14

15

16

18

95

Bangor Terrace

/

Ann Evans

Head

Wid

49

Glamorgan

Maesteg

Both

Jennett A Do

Daur

S

29

Dressmaker

own account

at home

Do

Do

"

Henry     Do

Son

M

22

Do

Do

"

Annie     Do

Daur

S

11

Do

Do

"

Benjamin D Davies

Visitor

M

41

Congregational Minister

Carmarthenshire

Llangewad

"

Richard G Roberts

Visitor

M

29

Do          Do

Caernarvonshire

Genmaemmsfr

"

6a.  1911 Census of England and Wales Every-Name-Index/Images (online at Ancestry.com, Image #556 of 667):  20 Garnwen Terrace, Nantyffyllon, Maesteg, Bridgend, Glamorgan, Wales, Class RG14, Piece 32531, SN 278, official enumeration date 2 Apr 1911 (extracted by Diana Gale Matthiesen):

1911:  for an explanation of the column headings, please see What the Numbers in the British Census Mean (missing columns contained no data).
1	2	4	5	6	7	8	9	10	12	13	14		17
Ann Roderick Evans	Head	59	Widow	22	7	5	2	Laundry Woman	Worker	at home	Maesteg	Glamorgan	Both
Jenet Ann Evans	Daughter	38	S					Dressmaker	own account	at home	Maesteg		Both
Elizabeth Ann Williams	Niece	8						School			Glamorganshire
Number of Rooms: 7 Informant: Henry Roderick Evans [Mark X] of R Evans, 12 Picton St. Nantyffyllon

Ancestry has mistakenly indexed Ann as living at 12 Picton St., the address of the informant.  If you look at the back of the form, you'll see she is living at 20 Garnwen Terrace, which is consistent with where she lived at the time of her death (see her will abstract below).

6b.  1911 Census of England and Wales: Every-Name-Index/Images (online at Ancestry.com):  Annie EVANS (æ 20, b. Maestig, GLA) is living at #12 High Street, Maestig, GLA, with her married sister, Elizabeth (EVANS) WILLIAMS (æ 38, b. Maestig, GLA), her husband, Daniel WILLIAMS (æ 41, b. Maestig, GLA), and their children.

7.  1921 Census of Wales: Every-Name-Index/Images (online at Ancestry.com):  the 1921 census will not be released until 2022.

8.  England & Wales, National Probate Calendar (Index of Wills and Administrations), 1858-1966 (online at Ancestry.com):

1939 p. 313

EVANS Ann otherwise Ann Roderick of 20 Garnwen-terrace Nantyffyllon Maesteg Glamorganshire widow died 12 February 1939 Probate Llandaff 1 March to Jennet Ann Evans spinster and Henry Roderick Evans tobacconist and confections. Effects £223 17s 6d.

9.  Public Member Trees (online at Ancestry.com).

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