Hello,
You most probably have this but I needed to find it to glean any more clues, Donald is still a mystery but I did follow up on the other names you gave me. Notice the different spellings.


Christchurch City Council Cemeteries Database
Result Detail
Surname: McDougall
First name(s): John
Date of death: Wednesday, 14 April 1943
Cemetery: Bromley
Date of burial: Thursday, 15 April 1943
Block number: 16
Plot number: 502
Age: 62 years
Address: 39 Holly Road, ChCh
Occupation: Manufacturers Agent
Place of birth: Ireland
Years in New Zealand: 30

http://paperspast.natlib.govt.nz/cgi-bin/paperspast?a=d&...--


Death:
record Number: 1967/27842 Margaret Mary MacDougall age at death 86Yrs.

Christchurch City Council Cemeteries Database
Result Detail
Surname: MacDougall
First name(s): Margaret Mary
Date of death: Friday, 4 August 1967
Cemetery: Bromley
Date of burial: Monday, 7 August 1967
Block number: 16
Plot number: 503
Age: 86 years
Address: [For privacy reasons this address is not displayed]
Occupation: Widow
Place of birth: Northern Ireland
Years in New Zealand:

Next time I’m in the area, I will visit and get some head stone photographs for you, may give more information.

Cheers Steve