I saw your post and I always see if I can help as I live in Canada.
Now,do you know any of your Dad's sibling's names?
I ask because I came across a Ronald Kenneth Chisholm who died in Nova Scotia in 2010.He has a brother Donald (wife is Evelyn)who also live in Nova Scotia.
Now,I also came across two deaths for the name Donald Chisholm..one in Vancouver and the other in Ontario BUT I don't know if either of them are your Father.
Do you know the names of your Dad's parents?
Do you have any more info?
What is your name? First name at least would help when I look at the Obit Collection and at all the Public Family trees.To put in the search.