Name, year of birth registration, country of birth, from search on New Zealand BDM website in July 2023:
Registered 1923/4959. Oliver, Hector Richard. Mother: Lilly Burton. Father: Charles

Full date of birth of 13/11/1922 from further searching in July 2023 on BDM Search by incrementally changing the date range for the birth.

Name of wife, year and country of marriage from search on New Zealand BDM website in August 2023:
1945/6932. Bride: Daphne Bettjeman. Groom: Hector Richard Oliver

Full date of marriage of 5 April 1945 from further searching in August 2023 on BDM Search by incrementally changing the date range for the marriage.

Date and place of death, place of burial, photo of headstone, from Find a Grave found in August 2023.
https://www.findagrave.com/memorial/156629715/hector-richard-oliver