Name of "John Westlake" month/year of birth of "May 1847", place of birth of "St. Giles in the Heath", year of marriage of 1869 [later found to be after 1871], date of death of "17 May 1922" from Peter Goss' family tree and added here in March 2023.
Peter Goss is eldest son of Elfrida Ruth Geddes. Elfrida Is the great-granddaughter of Francis Oliver (b.1840). Francis Oliver is the son of James and Ruth Oliver.

Occupation from the 1881 England Census taken on the night of 3 April 1881 for the Civil Parish of St Giles on the Heath, Devon, England, found in March 2023:
Address: Tetcott
John Westlake, Head, Married, age 34, Stone Mason, born St Giles in the Heath [Born circa 1847]
Amelia Westlake, Wife, Married, age 31, born Northcott Hamlet Devon [Born circa 1850]
Walter W Westlake, Son, age 8, Scholar, born Boyton Cornwall [Born circa 1873]
John Westlake, Son, age 6, Scholar, born Boyton Cornwall [Born circa 1875]
Amelia H Westlake, Daughter, age 5, Scholar, born Boyton Cornwall [Born circa 1876]
Mary L Westlake, Daughter, age 7 months, born Northcott Hamlet Devon [Born circa September 1880]
Ann Walters, Daughter-in-law, age 11, Scholar, born Northcott Hamlet Devon [Born circa 1870]
[NOTE: Brian of nzolivers has determined that this “Ann Walters” is the daughter of wife Amelia Walters and was from a relationship before Amelia’s marriage to this John Westlake].

Entry in the 1891 England Census taken on the night of 5 April 1891 for the Civil Parish of Hamlet of St Thomas in the Borough of Launceston, England, found in March 2023:
Address: Dartmoor Terrace
John Westlake, Head, Married, age 44, Mason, born St Giles in the Heath [Born circa 1847]
Amelia Westlake, Wife, Married, age 41, born Northcott Hamlet Devon [Born circa 1850]
Walter Wm Westlake, Son, Single, age 18, Mason, born Boyton Cornwall [Born circa 1873]
Amelia Westlake, Single, age 16, General Servant, born Boyton Cornwall [Born circa 1875]
Elizabeth Ann Westlake, Daughter, age 6, Scholar, born Northcott Hamlet Devon [Born circa 1885]
Freddy Westlake, Son, age 2, Scholar, born St Giles in the Heath [Born circa 1889]
Ethel Westlake, Daughter, age 5 months, born Launceston Cornwall [Born circa November 1890]
Thomas Avery, Lodger, Single, age 24, Navvy [Railway buiding?], born Delabole, Cornwall, England
Francis Brown, Lodger, Single, age 23, Navvy [Railway buiding?], born Delabole, Cornwall, England
William Hoskin, Lodger, Single, age 23, Navvy [Railway buiding?], born Delabole, Cornwall, England

This John Westlake is staying with his son John Westlake at the time of the 1901 England Census taken on the night of 31 March 1901 for the Civil Parish of St Stephens, in the Rural District of St Austell, Cornwall, England, found in March 2023:
John Westlake, Head, Married, age 27, Mason, Employer at home, born Boyton Cornwall [Born circa 1874]
Susan Westlake, Wife, age 27, born Egloshayle Cornwall [Born circa 1874]
Samuel Westlake, Son, age 3, born Egloshayle Cornwall [Born circa 1898]
Winnifred Westlake, Daughter, age 1, born Egloshayle Cornwall [Born circa 1900]
John Westlake, Boarder, age 53, Mason, Worker born St Giles in the Heath [Born circa 1848] [NOTE: This John Westlake is the father of John Westlake, Head of the Household].

Entry in the 1911 England Census taken on the night of Sunday, 2 April 1911 for the Civil Parish of Civil Parish of St Breock, Cornwall, England, found in March 2023:
Address: Burlawn, St Breock, Wadebridge, [North] Cornwall
John Westlake, Husband, age 66, Married, Married 42 years, Children Born Alive 13, Children still Living 7, Children Died 6, Wall Building House Building, For Contractor, Worker, born St Giles in the Heath [Born circa 1845] [Estimated Marriage Year 1869 although 1871 Census shows wife Amelia was ‘Single’.]
Amelia Westlake, Wife, age 61, Married, Married 42 years, Children Born Alive 13, Children still Living 7, Children Died 6, born Northcott Hamlet Cornwall [Born circa 1850]
Fred Westlake, Son, age 23, Carpenter General, Work on Gentleman's Estate, Worker, born St Giles in the Heath [Born circa 1888]
Edith Westlake, Daughter, age 18, born Lifton Down, Devon [Born circa 1893]

Was unmarried at time of the 1871 England Census taken on the night of 31 March 1901 for the Civil Parish of St Stephens, in the Rural District of St Austell, Cornwall, England, found in March 2023:
House: Boxes Shop Cottage
William Westlake, Head, Married, age 54, Mason, born Boyton Cornwall [Born circa 1817]
Louisa Westlake, Wife, Married, age 57, born Stoke Dameral [Born circa 1814]
John Westlake, Son, Unmarried, age 21, Mason, Employer at home, born St Giles in the Heath [Born circa 1850]

Month/year of marriage from the England and Wales Marriage records found in March 2023:
Groom: John Westlake
Bride: Amelia Walters
Registration: Oct-Nov-Dec 1871
Registration District: Launceston, Cornwall
Other Names: Matthew Fraser, Mary Geake

Date of death confirmed, age at death, place of burial, photo of headstone, from Find a Grave found in March 2023:
https://www.findagrave.com/memorial/155661251/john-westlake
Name: John Westlake
Death Date: 17 May 1922
Age: 75 years
Estimated Birth Date: Circa 1847
Cemetery: Egloshayle Cemetery, Wadebridge, Cornwall, England

Date of burial of “20 May 1922“ from Cornwall’s Egloshayle Parish Register found in March 2023.