Thank you Laura, Unfortunately, we have idea where in France she came from at this time, but hoping to discover more!
I'm looking at the same lists, and was hoping for your fresh perspective. I was stuck on the Fornault, which seems obvious but isn't a name I can really find anywhere.
What you're suggesting is that someone could have mis-read an "r" to be an "n". I've added names like De Foret and De Fournier to my list of possibles. And I welcome any other fresh thoughts!