1921 - 1991 (69 years)
 | Ian Thomas ROBERTSON 1950-1992 |
| Ian Thomas ROBERTSON | |
| B: | 1950 |
| New Zealand | |
| D: | 9 Sep 1992 |
| Marlborough, Nelson, New Zealand | |
| Hilda Edith HARRISON 1921-1991 |
| Hilda Edith HARRISON | |
| B: | 24 Dec 1921 |
| Canterbury, North, Central, New Zealand | |
| D: | 24 Aug 1991 |
| Christchurch, Canterbury, New Zealand | |
| Thomas Arthur ROBERTSON 1922-1999 |
| Thomas Arthur ROBERTSON | |
| B: | 10 Aug 1922 |
| Runanga, West Coast, New Zealand | |
| D: | 11 Sep 1999 |
| Christchurch, Christchurch, Canterbury, New Zealand | |
