Aged 21 in 1889 at Farnworth when married
Aged 20 in 1891, born Leeds (and Hephzibah 19)
Aged 29 in 1901, born Leeds (born 1872)
Aged 38 in 1911, born Leeds (born 1873)
Aged 34 in 1914 when enlisted ("apparent" age)
Aged 79 in 1950 when died at Farnworth.

There is no John Charles Mather birth registered at Leeds.  Although he was 21 when married, he was only 20 two years later so probably married under age.  The closest birth registration match is at Derby:


MATHER, JOHN  CHARLES EARP     BRIGHT 
GRO Reference: 1872  D Quarter in DERBY 
Volume 07B  Page 437
This in the son of Joseph Jones Mather who married Elizabeth Bright in Derby, i.e. another.  This John Charles E Mather stayed in Derby and married there in 1893.

Possibly died Darlington, 1944, aged 70, but back to Farnworth is more likely:

Deaths Mar 1950   (>99%)
Mather     John C     79     Farnworth     10c, 234

Aged 18 in 1889 when married
Aged 19 in 1891, born Waklen
Aged 37 in 1911, born Worsley

Name:    Hephzabah Leigh
Baptism Date:    7 Jul 1872
Baptism Place:    St. John the Evangelist, Farnsworth & Kearsley, Lancashire, England
Father:    William Leigh
Mother:    Mary Ellen Leigh
FHL Film Number:    1538438
Reference ID:    item 4 p 253

MATHER, ETHEL        LEE 
GRO Reference: 1891  S Quarter in BOLTON 
Volume 08C  Page 349

Name:    Ethel Mather
Baptism Date:    8 Jul 1891
Baptism Place:    Farnworth with Kearsley, St John The Evangelist, Lancashire, England
Parish as it Appears:    Farnworth W Kearsley
Father:    John Charles Mather
Mother:    Hephizabah Mather
Reference Number:    L202/1/1/8
Item Number:    1
Archive Roll:    834

Abode: 6 Booth Lane, Little Lever

Aged 18 in 1911, Born Farnworth

MATHER, WALLACE        LEE 
GRO Reference: 1893  S Quarter in BOLTON 
Volume 08C  Page 354

Name:    Wallace Mather
Death Age:    51
Birth Date:    abt 1893
Registration Date:    Q1 1944
Registration District:    Sunderland, Durham
Volume:    10a
Page:    752

MATHER, EFFIE        LEIGH 
GRO Reference: 1898  M Quarter in SUNDERLAND 
Volume 10A  Page 664

Aged 8mo in 1901, born Ryhope, Durham, England
Aged 10 in 1911, born Ryhope, Durham, England

MATHER, LILY        LEIGH 
GRO Reference: 1900  S Quarter in SUNDERLAND 
Volume 10A  Page 674

Aged 9 in 1911, born Ryhope, Durham, England

MATHER, FLORENCE        LEIGH 
GRO Reference: 1901  D Quarter in SUNDERLAND 
Volume 10A  Page 122

Aged 8 in 1911, born Ryhope, Durham, England

MATHER, WILFRID        LEIGH 
GRO Reference: 1903  M Quarter in SUNDERLAND 
Volume 10A  Page 798

Aged 6 in 1911, born Ryhope, Durham, England