I have obtained a family tree dating back to the first settlers from Northern Ireland.
I also obtained a book titled "The Dunsmore Pathway". The early part of the book has interesting info on the family in Scotland and the move to Northern Ireland, before emigration to North America. Densmore, Dinsmore, Dunsmore and other variations have the same history.
This info along with other "tidbits" is available in the Nova Scotia Archives. "The Dunsmore Pathway" is also on file at the National Archives of Canada in Ottawa and the Ontario Provincial Archives.