Name:    William Hargreaves
Baptism Date:    3 Mar 1833
Parish:    Burnley, Lancashire, England
Father:    James Hargreaves
Mother:    Mary Hargreaves
Register Type:    Bishop's Transcripts
Reference Number:    Drb/2/224

Abode: Cliviger (Wool Comber)

Susannah was a widow in 1881

In June Edmonds Tree:
Carisbrook, 12 Burn St, Caversham, Dunedin, New Zealand

Name:    William Hargreaves
Gender:    M (Male)
Birth Date:    1835
Death Date:    12 Apr 1911
Death Place:    Dunedin City, Otago, New Zealand
Cemetery:    Southern Cemetery
Burial :    Dunedin, Dunedin City, Otago, New Zealand
Has Bio?:    Y
Children:    
George Sydney Hargreaves
John Henry Hargreaves
Sarah Ann Hargreaves
URL:    
https://www.findagrave.com/memorial/204874300/william-hargreaves

Aged 5 in 1841
Aged 16 in 1851
Aged 26 in 1861
Aged 46 in 1881, born Merclough

Name:    Swsanna (Susannah) Slater
Birth Date:    23 Aug 1834
Gender:    Female
Event Type:    Baptism
Father:    George Slater
Mother:    Sarah Whitehead
Baptism Date:    15 Sep 1834
Baptism Place:    Merclough, Lancaster, England
Denomination:    Wesleyan
Piece Title:    Piece 1489: Merclough, Parish of Whalley (Wesleyan), 1823-1837

Susannah the daughter of George Slater of Scholey head in the parish of Whalley in the county of Lancaster, Weaver and of Sarah his wife who was the daughter of William and Nancy Whitehead ...

Today, Scholey Head Lane heads East off Red Lees Road, midway between Mereclough and Cliviger.  The modern name is Over Town.

Name:    Susannah Hargreaves
Estimated Birth Year:    abt 1835
Registration Year:    1900
Registration Quarter:    Apr-May-Jun
Age at Death:    65
Registration district:    Burnley, Lancashire
Volume:    8e
Page:    178

HARGREAVES, JAMES        SLATER 
GRO Reference: 1855  M Quarter in THE BURNLEY UNION 
Volume 08E  Page 189

HARGREAVES, JAMES        0 
GRO Reference: 1855  J Quarter in THE BURNLEY UNION 
Volume 08E  Page 112

04 in 1861, born Cliviger (Burnley)
14 in 1871, born Burnley
34 in 1891, born Burnley
48 in 1911, born Overtown, Lancashire
76 when died

HARGREAVES, THOMAS        SLATER 
GRO Reference: 1856  S Quarter in THE BURNLEY UNION 
Volume 08E  Page 156

Possibly twins:
Lancashire Birth indexes for the years: 1856
HARGREAVES    Matilda    SLATER    Burnley    Preston    BU/40/27
HARGREAVES    Thomas    SLATER    Burnley    Preston    BU/41/34

HARGREAVES Thomas of 89 Church-St, Burnley died 7 January 1940 at Monkholm Nursing Home, Reedley Hallows, Burnley. Probate Lancaster 5 February to Ernest Hargreaves retired entamologist. Effects £780 8s 8d

Thomas may have been 73 or more likely 76:

Deaths Mar 1940   (>99%)
Hargreaves     Thomas     76     Blackburn   8e, 938

HARGREAVES    Thomas    73    Rawtenstall A 2nd    Preston    RAW.A/4/97
or,
HARGREAVES    Thomas    76    Blackburn East    Blackburn    BE/8/53
or,
HARGREAVES    Thomas    76    Blackburn West    Blackburn    BW/8/63