Name from letter dated 29 July 1979 to Muriel Leo (nee Oliver) from Fay Christiansen (nee Andrews), and added here in May 2020.

Initial of second given name, date of death, place of burial, estimated year of birth, from Okaiawa Cemetery records found in June 2020:
Row 8, 81
In loving memory of Agnes beloved wife of William NELSON died 13 May 1952 a. 58 yrs.
2/1065 Gnr W. J. NELSON field Artillery died 28.6.1965 a. 72 yrs. [Therefore born circa 1893]

Second given name, year and country of birth from search on New Zealand BDM website in June 2020:
1893/7988. Nelson, William James. Mother: Mary. Father: William

Full date of birth of 19 April 1893 from further searching in June 2020 on BDM Search by incrementally changing the date range for the birth.

No record of marriage to Agnes could be found on the New Zealand BDM website as at June 2020.