Name, year and country of birth from search on New Zealand BDM website in April 2019:
1912/26172. Young, Angus Donald. Mother: Nellie. Father: John

Full date of birth of 17 July 1912 from further searching in April 2019 on BDM Search by incrementally changing the date range for the birth.

Occupation, confirmation of mother, from the New Zealand Army WWII Nominal Rolls, 1939-1948
Name: Young, Donald Angus
Army No.: 42337
Rank: Pte.
Unit: N.Z.D.C.
Conjugal Status: S.
Place of Enlistment: Napier
Occupation: Dental mechanic
Last New Zealand Address: 65 Hardings Road, Pt Ahuriri, Napier
Name and Address of Next of Kin: Mrs H. Young, 65 Hardings Rd., Pt. Ahuriri, Napier
Relationship of Next of Kin: Mother

Date and place of death and burial from Napier City Council Cemetery records found in April 2016:
Family Name: Young
Given Names: Donald Angus
Address: 146 Vigor Brown Street, Napier
Gender: Male
Occupation: Watersider
Age: 79 years
Date of Death: Saturday 14th March 1992
Date of Interment: Tuesday 17th March 1992
Type of Interment: Buried
Funeral Director: Dunstall's Funeral Services Ltd
Inscriptions: In loving memory of Frances Margaret YOUNG beloved wife of Donald Angus loved mother of Robert and loved nana of Karen and John died 5 July 1984 aged 70 years also Donald Angus YOUNG beloved husband of Frances Margaret died 14 March 1992 aged 79 years
Cemetery: Wharerangi Cemetery
Area: Middle Ridge Beam
Section: Sec 114
Plot: 26

No record of marriage could be found on the New Zealand BDM website as at April 2019.