Very possible. My grandmother’s maiden was Fairchild who settled in Connecticut, but as they moved west they were in Ulster co. New York for awhile, which was home to a great number of French Huguenots.
One was named Louis du Bois de Fiennes, who happened to be Norman French nobility who bounced between England and France for several hundred years and either directly or indirectly married into every family of consequence in Europe, including Vikings. We married into that about 5 generations descended from Louis du Bois via some of the old New York families. I am actually descended from Charlemagne if you go back far enough.
Basically, if you can hook into nobility anywhere back there, you’re hooked into everybody. It’s amazing how incestuous European nobility is, even between countries that regularly fought each other.
You’ve got it down very nicely.
You’re right about European Royalty.
Charles Carroll of Carrollton {Maryland} a signer of the Declaration of Independence is a distant relative of mine.