Expected to be the brother of Ralph, as both families lived at Charnock. Although baptised 3 years before married, this is a good match as son of Thomas and Margaret (as expected), and Turton which is close to Anglezark.

John, son of Thomas and Margaret Mather of Turton born November the 16th

Name:    John Mathar
Baptism Age:    0
Event Type:    Baptism
Birth Date:    10 Nov 1697
Baptism Date:    1 Dec 1697
Baptism Place:    Bolton-le-Moors, St Peter, Lancashire, England
Father:    Thomas Mathar
Mother:    Margaret Mathar
Reference Number:    L243/1/1/2
Archive Roll:    853

There are other baptisms at Radcliffe which are perhaps better fit:
30 Apr 1702, son of Richard Mather of Radcliffe
1704, Son of James

Name:    John Mather
Event Type:    Burial
Burial Date:    3 Nov 1777
Burial Place:    Rivington, Lancashire, England
Reference Number:    L79/1/4/1
Archive Roll:    988

Text: "Old John Mather of Anglezarke"

John, son of John Mather of Lowton, baptised at Leigh 14 Jun 1713 is possible but unlikely.

John son of Thomas Mather (no abode) baptised at Leigh 19 Oct 1725 is possible and more likely as date closer to expected.

Most likely:
Name:    John Mather
Gender:    Male
Baptism Date:    22 Jul 1722
Baptism Place:    Radcliffe,Lancashire,England
Father:    John Mather
FHL Film Number:    0547193, 0844812

May have died before 1788 as son John's burial only names his mother.  However, the following record appears to be him:


Name:    John Mather
Event Type:    Burial
Burial Date:    7 Jun 1789
Burial Place:    Rivington, Lancashire, England
Parish as it Appears:    Rivington Parish Church
Reference Number:    L79/1/4/1
Item Number:    8
Archive Roll:    988
Text: "John Mather of Adlington"


Many (most) of the burial recrds on this page are shown as paupers.  John was not one of them.

There is a burial in 1777 at Rivington for "Old John Mather of Anglezarke" but this is more likely his father.

Name:    Thomas Mather
Gender:    Male
Baptism Date:    1 Jan 1725
Baptism Place:    Radcliffe,Lancashire,England
Father:    John Mather
FHL Film Number:    0547193, 0844812

Page title: For the year 1724:
Dec 27th Thomass son of John Smethurst
Jan 1st Thomas son of John Mather (2nd entry)

Name:    Ann Mather
Event Type:    Baptism
Baptism Date:    May 1726
Baptism Place:    Rivington, Lancashire, England
Parish as it Appears:    Rivington Parish Church
Father:    John Mather
Reference Number:    L79/1/2/1
Archive Roll:    988
Abode: Anglezarke

Name:    Susannah Mather
Event Type:    Burial
Burial Date:    20 May 1726
Parish:    Bolton le Moors, St Peter
Parish as it Appears:    Bolton St Peter Parish Church
Father's name:    John Mather
Reference Number:    L243/1/1/3
Item Number:    1
Archive Roll:    854

Susannah d. of John Mather of Turton Yeoman bur'd in temple.

Margaret daughter of John Mather of Anglezerk
Note below states: "These seven last belong to 1727", so should be 1727, not 1726 as indexed:
Name:    Margret Mather
Event Type:    Baptism
Baptism Date:    11 Feb 1726
Baptism Place:    Rivington, Lancashire, England
Father:    John Mather
Reference Number:    L79/1/2/1
Archive Roll:    988