French Canadian, migrated from France in 1648 both paternally and maternally.
No marriages with the Irish Canadians, or adoptions, anything like that?
What did that give you in Oracle? I'm assuming something Northwest Euro/British? From everything I've read, a lot of French Canadian settlers came from the Northwest of France, where there's quite a bit of similarity with the British. Is that your take on it as well?
I should have said outright that I'm not very fond of some Admixture calculators, and I'm particularly not fond of this one. Admixture is only as good as the populations you give it. They have to be chosen very carefully. This one, which uses a mishmash of modern and more ancient categories, is very problematic.
Still, if you give it enough regional reference populations, the Oracle results can make sense. The best use of them is to compare oneself with other people of your own background and see where, if anywhere, you differ. Of course, if you're part of the original sample set even that isn't accurate. What people shouldn't do is think that, in your case for example, you have recent Iberian or Italian ancestry.
Ed. Ah, I forgot that there isn't an Oracle for that one, which means the only utility it would have at all is to compare your results with other French Canadians. There's no way of ascertaining whether it places people anywhere near where one would expect.
For comparison purposes, on the Eurogenes 13 calculator, which does have an Oracle function, my fits are very bad (4.8, 5.1 for the first two) even though he has six Italian populations. MDLP 13, on the other hand, gets me down to 1.94 and 2.15, the lowest I've ever gotten, and pretty good for someplace like Italy with so much regional variation.