I'd like to ask if you have checked the 1790 census for NH for the MORRILL name.
I'd also like to ask if you know when and why Betsey moved to Canada. Did you marry and move there or did her parents move there?
Also, several years ago I started up a CAN-USA-Migration List, and a year or so ago I started up a Board to go along with it.
Betty (near Lowell, MA)