First given name of “Joan”, date of death, place of burial, from research file42 in January 2019.

Date of birth, country of death, from death search on New Zealand BDM website in January 2019:
1984/34039. McKay, Joan. Date of Birth: 9 November 1917

Full date of death of 13 July 1984 confirmed from further searching in January 2019 on BDM Search by incrementally changing the date range for the death.

Maiden name, year and country of marriage from search on New Zealand BDM website in December 2022:
1942/8064. Bride: Joan Blease. Groom: Harold Anthony McKoy

Full date of marriage of 4 November 1942 from further searching in December 2022 on BDM Search by incrementally changing the date range for the marriage.