Surname from page 130 of the biography of Morris’ father-in-law, Ben Roberts:
“Remembered - From Ploughboy to Parliamentarian, The life and works of the Hon. Ben Roberts, Minister of Agriculture and Marketing 1943-46”.

First two given names, month/year of birth, date and place of death, place of burial, photo of headstone, from Find a Grave website found in September 2023:
https://www.findagrave.com/memorial/207484378/cyril-stanley-morris
BIRTH: Jul 1905, Masterton District, Wellington, New Zealand
DEATH: 4 Jul 1962 (aged 56–57) Masterton District, Wellington, New Zealand
BURIAL: Archer Street Cemetery, Masterton, Masterton District, Wellington, New Zealand
PLOT: Lawn A-Z, Row A, Plot 3

Year and country of marriage from search on New Zealand BDM website in October 2023:
1928/4805. Bride: Ivy, Roberts. Groom: Cyril Stanley Morris

Full date of marriage of 12 December 1928 from further searching in October 2023 on BDM Search by incrementally changing the date range for the marriage.

Year and country of birth from search on New Zealand BDM website in October 2023:
1905/14889. Morris, Cyril Stanley. Mother: Charlotte. Father: George

Full date of birth of 17 July 1905 from further searching in October 2023 on BDM Search by incrementally changing the date range for the birth.

Year and country of death, from death search on New Zealand BDM website in October 2023:
1962/35508. Morris, Cyril Stanley. Died age 57Y [Therefore born circa 1905 and matches]

Full date of death of 4 July 1962 from further searching in October 2023 on BDM Search by incrementally changing the date range for the death.