Hi. I have a Mary e. in my family tree from Ontario. Are yuo sure she migrated in 1860? She could be a Grtx2 or even a Grtx3 Aunt of mine, as the former was most likely named for the later. The latter was still in Ontario in 1881, single amd a dressmaker but can't track her down .May still be able to help you as I have cousins who know more of the Grt x3 Aunt. She would fit migrating in 1860, if that is indeed the case?