I see that this is a very old query, 10 years old as a matter of fact. I hope this reaches you still.
My g-g-g grandmother was Mary Ann Lavery, Parents William Lavery and Mary Gillespie, who married Patrick Wilkinson, both originally of Northern Ireland. I believe she moved to the eastern Township area of Quebec sometime in the 1850's after Patrick died, in Montreal. My g-great grandfather Simon, their son, lived in brome-mississquoi, married a woman named Amity Miner, who pre-deceased him, and he eventually died in Richford, Vermont. Not sure who he was staying with, but i find links to my family there under many lines: Wilkinson, Lavery, Miner, and also under the last name Jacobs (my great grandmother's maiden name.)
Do any of these names ring a bell?