New Zealand Electoral Roll 1969 for Miramar, Wellington:
MacKillop Bruce Ian MacDonald, 46 Waitoa Road
MacKillop Helen Shirley, Flat 2 46 Waitoa Road

New Zealand Electoral Roll 1969 for Western Hutt, Wellington:
MacKillop Bruce Ian M, 65 Salford Street, Newlands
MacKillop Helen Shirley, 65 Salford Street, Newlands

New Zealand Electoral Roll 1972 for Island Bay, Wellington
MacKillop Bruce Ian M, 68 Mortimer Tce, WW (Wellington West)
MacKillop Helen Shirley, 129 Eden Street

Died as a result of car accident - stationary in line of cars at traffic lights.

Year and country of death, date of birth, from death search on New Zealand BDM website in June 2025:
1975/50078. MacKillop, Bruce Ian McDonald. Date of birth: 24 December 1940

Full date of death of 5 June 1975 from further searching in June 2025 on BDM Search by incrementally changing the date range for the death.