Name, date of birth and date of death, adopted, from Muriel Leo’s (nee Oliver, 1917-1998) Family Tree.

Year and country of marriage from search on New Zealand BDM website in June 2023:
1946/19101. Bride: Mavis Gordon Jack. Groom: William Ernest Dixon Oliver

Full date of marriage of 2 August 1946 from further searching in June 2023 on BDM Search by incrementally changing the date range for the marriage.