Am not sure just where to put this but this girl from New Zealand has come up with a solution to the problem of having two different husbands on this man's son who moved to New Zealand after spending a short time in Australia. This is for information only: to others who may be following the Herd/Hird families in Canada and in New Zealand.:
"This is the profile I have made for the other David Herd.
https://www.wikitree.com/wiki/Herd-869 You will see that I have added his wife, Helen/Ellen. I have listed the children I am sure of, but there are obviously others. You can access all the documents online yourself. (A lot of NZ sources are free and easily accessed. I don’t even need to belong to Ancestry!)
My thought is that I will add Margaret Herd Paynter to “your” David Herd and attach Margaret Elizabeth Herd Don to Herd-869 above and fix up her dates, sources etc."
I’ll remove the detail about the marriage of Helen, and the death of George from “your” profiles. I’ll see if I can find the correct marriage and therefore death source for “your” Helen. (I will probably create the other Herd profiles- George is easy. Helen might be more difficult.)
She had some up with this solution. Do not know this family and since my information came from another source, a Stevie Herd do not know how to fix this. Hope this meets with the approval of anyone involved.