Breton Names
Breton is a Brittonic language like Welsh, carried to north-west France by migrants from Britain, which is why these names look Celtic and chart in France. They are the reason a French top-100 list can contain names that would not look out of place in Cardiff.
Languages behind these names
Breton
Hebrew
Celtic
Irish Gaelic
4 names, uncommon — 100 to 499 a year, in the United States