Albion – ie: the United Kingdoms of the Britons, Irish, and Pictish mirrors the real world decently enough. It has had a strong king and probably the oldest ruling dynasty. Same naming conventions of prominent families continue to be welsh (brittonic/brythonic), pictish, scottish, irish, and such. I'm not sure if as such would be the best choice. Latin conventions are pretty simple to figure out.

You picked a French given name and a Latin-esque surname so I would guess the southern counties Vannetais or the northwestern duchies of the Roman Republic would work. That is just what comes to mind. Both have no representation on the character pool end.