After following a few Wiki links, I believe they were in the Mountain community of North Dundas township, Ontario. When my ancestors were married in the late 1830s, he stated that he was from "Mountain." We do know they were in the vicinity of what is now North Dundas twp. Maybe if I knew how to contact a local historical society (or even a regional one), someone there might be able to help. And I still am looking for church records.