Surname 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.

First two given names, year and country of marriage from search on New Zealand BDM website in January 2025:
1914/7392. Bride: Ellen Friedrich. Groom: James Gray Ritchie

Full date of marriage of 22 January 1914 from further searching in January 2025 on BDM Search by incrementally changing the date range for the marriage.

Exploring the NZ BDM for a date of death, two results are likely:
1943/20611. Ritchie, James Gray. Died age 67Y on "1 June 1943" [Therefore born circa 1876]
1959/32101. Ritchie, James Gray. Died age 82Y on "29 June 1959" [Therefore born circa 1877]
As at January 2025, Brian of nzolivers has yet to confirm if either is correct.