Name, date of birth and death, place of burial, from billiongraves.com website for Greytown Cemetery in June 2017.

From the 1946 Wairarapa Electoral Roll:
Gates, Kenneth Herbert, Jelliene Street, Greytown, farmer
Gates, Audrey Phyllis, Jellicoe Street, Martinborough, married

From the 1949 Wairarapa Electoral Roll:
Gates, Kenneth Herbert, Jelliene Street, Greytown, farmer
Gates, Audrey Phylliss, Jellicoe Street, Greytown, married

Maiden name, year and country of marriage from search on New Zealand BDM website in May 2021:
1940/8689. Bride: Audrey Phyllis Olson. Groom: Kenneth Herbert Gates

Full date of marriage of 12 June 1940 from further searching in May 2021 on BDM Search by incrementally changing the date range for the marriage.