Name, date and place of birth, date and place of marriage, year of death, from Joshua Keijsers’ Family Tree as at May 2020.
Joshua is the x2 great grandson of Walter and Edith Minnie (nee Oliver) Chatterton through their daughter Beryl Minnie May Chatterton, and in turn her son Lindsay Jack Martin, and onwards.

This ‘Ian George Oliver’ is blood related to Brian of nzolivers through his mother’s side:
1. Ian’s mother, Alberta Lilian Gates, and Brian of nzolivers, are both descendant from Joseph Dodson born 1780:
https://nzolivers.com/tree/wc10/wc10_080.html
2. It is interesting to note that Ian George Oliver’s wife, Isobel Chatterton is blood related to Brian of nzolivers. Isobel’s father was Keith Walter Chatterton and his father, Walter Chatterton, married Edith Minnie Oliver. Edith’s father was Francis Oliver (https://nzolivers.com/tree/wc01/wc01_125.html). Francis is the brother of my great-grandfather, Samuel Oliver!

Country of death, date of birth confirmed, from death search on New Zealand BDM website in May 2020:
2012/31717 Oliver, Ian George. Date of birth: 1 April 1938

Full date of death of 12 December 2012 from further searching in May 2020 on BDM Search by incrementally changing the date range for the death.

Result from birth search on New Zealand BDM website in July 2023:
1938/59693. Oliver, Ian George. Mother: Alberta Lilian. Father: Robert Thomas

Full date of birth of 1 April 1938 confirmed from further searching in July 2023 on BDM Search by incrementally changing the date range for the birth.