Daniel, age 72, farmer, born United States, Church of England
Margaret, age 62, born Ireland, Roman Catholic
I haven't been able to find them in any other census. Do you happen to know who Daniel's parents were?
I have the book "THE OLMSTED FAMILY" but so far have not been able to find this Daniel - there are quite a number listed in the book index, but the problem is the index does not give any indication of birth years so you need to go through them all AND there are several indexed in the book as well just to make it all the more fun in looking.
But if you know the parents I would be happy to look again - also if you know his wife Margaret's maiden name that can help.
My Olmsted/Olmstead family also went to the Ottawa area but I haven't figured out a connection to your Daniel.