My great grandparents Albert MACK and Elizabeth Annie LAW were married in Stephenson, Ontario in 1876. They are on the 1901 census for Stephenson, however, I have lost them between 1876 and 1901.

Their first child Margaret MACK was born 1877 in Ontario, second child George MACK 1880 in Ontario. Possibly in Gananoque.

I have searched the 1881 high and low for them and simply can't find regardless of name combinations I try. Also tried 1880 in USA since both parents are originally from USA. I've checked all of the Stephenson census records for them and for the period I am missing I can't find them. Annie's parents are however in Stephenson during that time.

I also checked the 1891 for Stephenson but can't find them.

Were all Ontario residents included in the 1881 census or were there areas not covered? I'm at a loss here as to where they were during that period.

Any suggestions?
Wendy Hogan
Ontario, Canada