Here is some information that may help you:
Here is Cassie & children in the 1901 Census. She is widowed.
http://automatedgenealogy.com/census/View.jsp?id=25859&h...If you click the "link" at the end of the line of each person, it will take you to them in the 1911 Census.
I found a marriage record for John Samuel Grant to Annie May Burgoyne in 1922
https://www.novascotiagenealogy.com/ItemView.aspx?ImageFile=.... Also, John's birth record:
https://www.novascotiagenealogy.com/ItemView.aspx?ImageFile=....
Hope this helps