Name, date of birth, from “Descendants of William Kendall" family tree dated 9 December 1992. Source appears to be Lyane Marguerite Kendall (1947-2010) (nee Hunter) of Hobsonville, Auckland. Added here in January 2025.

Year and country of marriage, from search on New Zealand BDM website in January 2025:
1941/12489. Bride: Julia Friedrich. Groom: Stewart Langdon Tyson

Full date of marriage of 21 October 1941 from further searching in January 2025 on BDM Search by incrementally changing the date range for the marriage.

Year and country of death, date of birth confirmed, from death search on New Zealand BDM website in January 2025:
1998/16889. Tyson, Stewart Langdon. Date of birth: 16 September 1910

Full date of death of 14 August 1998 from further searching in January 2025 on BDM Search by incrementally changing the date range for the death.