Name and occupation from 1936 record found in the Archives New Zealand Collections website in July 2025:
"Elizabeth Jane Niuman wife of Karl Oskar Niuman of Auckland, Master Mariner - Lot 100 and part Lot 101 Allotment 20 sec 8 Suburbs of Auckland".

Date of death, place of burial, estimated year of birth of 1862, from Hillsborough Cemetery headstone records, page 145, found in July 2025:
ROW 29 contd..
2322 In Memory of Karl Oscar NIUMAN (Master Mariner) beloved husband of Elizabeth J NIUMAN died 14 May 1927 aged 65 yrs (Sakey)

Year and country of marriage, maiden name of wife, from the New Zealand Marriage Index found in July 2025:
Groom: Karl Oscar Niuman
Bride: Elizabeth Jane Kasper
Marriage Year: 1902
Marriage Place: New Zealand
Folio Number: 4907

Result from marriage search on New Zealand BDM website in July 2025:
1902/5143. Bride: Elizabeth Jane Kasper. Groom: Karl Oskar Nuiman

Full date of marriage of 26 November 1902 from further searching in July 2025 on BDM Search by incrementally changing the date range for the marriage.