Thanks for your reply. Since my last posting, I have uncovered a copy of a family tree that lays out some of the Falconbridge genealogy, including the Delatre connection. Unfortunately, I do not have an electronic copy. I would be happy to provide a paper copy if you are interested.
Separately, I noticed that you have posted several comments on the Allison family. I have an Allison in my family (on my father's side, rather than on my mother's, which is where the Falconbridges come in). The Allison in question is Laney Allison, who I believe married my great-great grandfather, Peter Hatch of Deseronto (possibly from Germany by way of Pennsylvania). Any history on the Allisons that you could share would be of great interest to me.