His baptism on FamilySearch:

parents: Thomas Seal,​ Mary

name: John Seal
gender: Male
baptism/christening date: 26 Dec 1802
baptism/christening place: Chippenham, Cambridge, England
father's name: Thomas Seal
mother's name: Mary
indexing project (batch) number: C01687-1
system origin: England-EASy
source film number: 887403
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In 1841, this was his family:

Surname  Forename   Age  Relation  Occupation      Born in County?

Seal John 40 - Agricultural Labourer   Yes  
Seal Martha   35 - Yes
Seal Mary 13 - Yes
Seal Margaret 10 - Yes
Seal Eliza 8 - Yes
Seal Thomas 7 - Yes
Seal John 4 - Yes
Seal Ratford 1 - Yes

Ref: HO107/0073/F?

Address: Quafen Common (transcribed as Eastfen Cmn)
Parish: Soham
Registration District: Newmarket
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In 1851 the family was:

Surname  Forename  Age  Relation  Occupation  Birth Place

Seal John 49 Head Agricultural Labourer  Soham, Cambridgeshire
Seal Martha 51 Wife Soham, Cambridgeshire  
Seal Mary A 23 Daur Soham, Cambridgeshire  
Seal Thomas 16 Son Soham, Cambridgeshire
Seal John 14 Son Soham, Cambridgeshire
Seal Ratford 11 Son Soham, Cambridgeshire
Seal George 4 Son Soham, Cambridgeshire
Seal James 1 Grand Son Soham, Cambridgeshire

Ref: HO107/1763/~F176

Address: Quafen Common
Parish: Soham
Registration District: Newmarket
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In the 1861 census, John and Martha were still alive but had only son George and grandson James with them.
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His death index:

First name(s) JOHN
Last name SEAL
Gender Male
Birth year 1802
Age 78
Death quarter 3
Death year 1880
District Newmarket
County Cambridgeshire
Volume 3B
Page 342
Country England
Record set England & Wales Deaths 1837-2007

And his burial:

First name(s) John
Last name Seal
Birth year 1804
Death year 1880
Age 76
Burial year 1880
Burial date 09 Aug 1880
Parish Soham, Burial Book
County Cambridgeshire
Grave details D1608/1219/
Record set Cambridgeshire Burials
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Their marriage on family search:

groom's name: John Seale
bride's name: Martha Dewe
marriage date: 24 Jan 1826
marriage place: Soham, Cambridge, England
indexing project (batch) number: M01482-2
system origin: England-EASy
source film number: 989542
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