Hi Shirley,
William Hill and Grace Stewart are my 4th time great grandparents thought their son Robert. From my research William, Grace and their 5 children were all born in Ireland, specifically parts of Northern Ireland like Armagh, Down and Belfast. Not sure when exactly they immigrated to Canada, I am still looking into Immigration records.
The person who started this thread helped me gain information on the Hill family and I have been trying to take int farther from there.
From what I have found William and Grace had 5 children John, Mary Ann, William, Stewart and Robert. I don't know much from there other than Robert had a son names Robert and 12 other children (a prolific lot!). Robert Jr. had at least 3 children (still researching that) I would invite you to my tree but I don't know how to do that.
Hope this helps a bit