Name, date of birth of 13 Jun 1909, date of marriage of 15 August 1941, date of death of 20 June 1985, from Muriel Leo’s (nee Oliver, 1917-1998) Family Tree.

Rachel Frances Oliver (b. 1940) believes the birth date was 19 June 1909.

Dax Eric Clayton Lloyd, (great-grandson of Jessie Bertha Oliver b.1876) confirms Rachel’s date for birth, and writes Alexander’s, “death registration has this about his birth:
Registration Number: 1984/46571
Family Name: Oliver
Given Name(s): Alexander Ninian
Date of Birth/Age at Death: 19 Jun 1909
So I agree with Rachel. Also please note the year the death was registered”.

“You have his death as being 20 Jun 1985, but here is his burial record;
Surname: OLIVER
First name: ALEXANDER NINIAN
Age at death:
Date of death/burial: 12/6/1984
Cemetery: Hastings
Address: 0
District:
Occupation:
Block name: RSA
Plot number: G96
Site: RSAG96_H
Purchaser: RSA
Funeral director:
Reference: 507129
The accompanying picture of his headstone has his death as 10 Jun 1984. As you can see there is over a year's difference. I also note that he is buried in the RSA section, however nothing shows up in the Auckland Cenotaph database for him (N.Z.A.F)”.

Brian of nzolivers.com has amended the date of birth and death as per Dax’s information.

New Zealand Electoral Roll - Hastings Main Roll 1969, found in July 2018:
Oliver, Alexander Ninian, 216 Tudor Av. driver
Doreen Lillias, 216 Tudor Av. married

New Zealand Electoral Roll - Hastings Main Roll 1972, found in July 2018:
Oliver, Alexander Ninian, 216 Tudor Ave. Driver
Doreen Lillias, 216 Tudor Ave. Married

New Zealand Electoral Roll - Hastings Main Roll 1978, found in July 2018:
Oliver, Alexander Ninian, 216 Tudor Avenue. Driver
Doreen Lillias, 216 Tudor Avenue. Married

New Zealand Electoral Roll - Hastings Composite Roll 1981, found in July 2018:
Oliver, Alexander Ninian, 216 Tudor Avenue. Driver
Doreen Lillias, 216 Tudor Avenue. Married

Born at home in Mataroa, School at ‘Rongeiti’ [?], died in sleep at Hastings Hospital, from images of notes written by Ivor James Clark Oliver and emailed by Katia, wife of Tim Grant Oliver, on 1 February 2021. Tim is the grandson of Ivor James Clark Oliver 1907-1989.

Result from marriage search on New Zealand BDM website in August 2021:
1941/9015. Bride: Doreen Lillias Williams. Groom: Alexander Ninion Oliver

Different day of marriage of 16 August 1941 from further searching in August 2021 on BDM Search by incrementally changing the date range for the marriage.