This William is from Cowcliffe and there is no good baptism match:

Name:    Wm . Stocks
Gender:    Male
Baptism Date:    26 Dec 1794
Baptism Place:    Kirkheaton,York,England
Father:    John Stocks
FHL Film Number:    98535


Name:    William Stocks
Event Date:    (6th) Apr 1795
Event Type:    Baptism
Parish:    Kirkheaton, St John the Baptist
Father's name:    Benj Stocks
The William also has a brother Jonathan, baptised May 1793, the son of Benjamin and Ann.

Name:    William Stocks
Estimated birth year:    abt 1794
Registration Year:    1868
Registration Quarter:    Jan-Feb-Mar
Age at Death:    74
Registration district:    Huddersfield
Volume:    9a
Page:    238

Name:    William Stocks
Death Age:    74
Birth Year:    abt 1794
Burial Date:    8 Mar 1868
Parish:    Woodhouse, Christ Church, Yorkshire, England
Abode: Netheroyd Hill

37 when died, so must have married young.

William was Widowed in 1851, so Mary died before.

Name:    Sarah Stocks
Birth Date:    9 Jan 1817
Parish:    Huddersfield, St Peter
Baptism Date:    30 May 1819
Father:    William Stocks (Mason)
Mother:    Mary Stocks
Abode:  Fartown

Sarah of William & Mary Stocks
Sarah & George were baptised together, but are not twins.

Name:    George Stocks
Birth Date:    18 Mar 1819
Parish:    Huddersfield, St Peter
Baptism Date:    30 May 1819
Father:    William Stocks (Mason)
Mother:    Mary Stocks
Abode: Fartown

Sarah & George were baptised together, but are not twins.

Not on 1871, 1881 census

This the George Stocks of Taylor Hill (buried 12 Aug at Lockwood)
Name:    George Stocks
Estimated birth year:    abt 1821
Registration Year:    1893
Registration Quarter:    Jul-Aug-Sep
Age at Death:    72
Registration district:    Huddersfield
Volume:    9a
Page:    215

Name:    Jane Stocks
Birth Date:    28 Sep 1821
Parish:    Huddersfield, St Peter
Baptism Date:    16 Dec 1821
Father:    William Stocks (Mason)
Mother:    Mary Stocks
Abode: Cowcliffe

Name:    Mary Anne Stocks
Parish:    Woodhouse, Christ Church
Baptism Date:    9 Jan 1825
Father:    William Stocks
Mother:    Mary Stocks
Abode:    Cowcliffe

Note: Mary Stocks of Hillhouse who died 25 Feb 1829 (age 4), so same age, was the daughter of George and Hannah of Hillhouse.

Name:    Hannah Stocks
Parish:    Woodhouse, Christ Church
Baptism Date:    26 Feb 1826
Father:    William Stocks (Mason)
Mother:    Mary Stocks
Abode:    Cowcliffe

Name:    Hannah Hartley
Estimated birth year:    abt 1823
Registration Year:    1870
Registration Quarter:    Jul-Aug-Sep
Age at Death:    47
Registration district:    Huddersfield
Inferred County:    Yorkshire West Riding
Volume:    9a
Page:    221

Aged 6wks when died

Name:    John Stocks
Age:    6 Weeks
Birth Year:    abt 1830
Burial Date:    10 Sep 1830
Burial Place:    Woodhouse, Christ Church, Yorkshire, England
Parish:    Woodhouse, Christ Church

Aged 6 weeks
Abode: Cow Cliff

Name:    Samuel Stocks
Parish:    Woodhouse, Christ Church
Baptism Date:    12 Dec 1831
Father:    Willm Stocks (Mason)
Mother:    Mary Stocks
Abode:    Cowcliffe
Note on record shows "Baptised at Home"

Was with father (William, a mason from Cowcliff) and sister Hannah in 1851, aged 13.

Name:     Eliza Stocks
Mother:     Mary Stocks
Father:     William Stocks
Baptism:     8 Oct 1837 - Huddersfield, St Peter, Yorkshire, England
Text: "Eliza daughter of William and Mary Stocks, Cowcliffe, Mason"

Note: There is also a baptism for Betty Socks from Cowcliffe, baptised the same year by the same parents.
Name:    Betty Stocks
Parish:    Huddersfield, St Peter
Baptism Date:    1 Mar 1837
Father:    William Stocks
Mother:    Mary Stocks