Interesting. Do you have a tree on here that I can look at? Or some basic information on your Peter Campbell / Duhamel? (Birthdate, parents' names, siblings, wife, etc) The family that I am refering to changed the name to Campbell for convenience, I assume, but as with many other French Canadian immigrants, they probably never privately abandoned their original name, which is why you would find it on later documents. If it turns out that your gg grandfather is part of this family, then I have more to share with you.