Using graphic elements like this world map, to see in which countries or regions of the world the surname Berthois is more common, is of great help.
Thanks to this world map that shows the density of people with the surname Berthois in different countries, you can get an idea not only of the popularity of the surname Berthois in each country but also of the different migrations of people surnamed Berthois.
The quantity of people with the surname Berthois that we can find in each country can help us discern the origin of the surname Berthois, as logic tells us that the place with the most people surnamed Berthois will be the country or area of origin of the surname Berthois.
Locating at a single glance the countries where the surname Berthois is more abundant, as well as the areas of the globe where there are hardly any people with the surname Berthois, is of great utility for individuals interested in surnames, and specifically in the surname Berthois, as it allows them to quickly and easily visualize the data and its distribution."