Surname of “Wilcock” from Biography of wife’s father, John Graydon, found in the Find a Grave website in June 2025.

First given name, year and country of marriage from search on New Zealand BDM website in June 2025:
1908/5253. Bride: Elizabeth Mabel Olive Graydon. Groom: Harry Wilcock

Full date of marriage of 15 April 1908 from further searching in June 2025 on BDM Search by incrementally changing the date range for the marriage.

Date of death from headings for preview of Obituary published in the The Sydney Morning Herald, found in July 2025:
Name: Harry Wilcock
Gender: Male
Death Date: 28 Jul. 1971
Obituary Date: 29 Jul. 1971
Obituary Place: Sydney, New South Wales, Australia
Newspaper Title: The Sydney Morning Herald
Spouse: Elisabeth
Child: Olive Marlorie

Year and place of death from search on NSW Australia BDM website in July 2025:
Name: WILCOCK, HARRY
Registration Number: 56705/1971
Father's Given Name(s): JOHN
Mother's Given Name(s): ELIZABETH
District: ST LEONARDS

Full date of death of 28 July 1971 confirmed from further searching in July 2025 on NSW BDM Search by incrementally changing the date range for the death.