Thanks to this world map that shows the density of people with the surname Wathier in different countries, you can get an idea not only of the popularity of the surname Wathier in each country but also of the different migrations of people surnamed Wathier.
The quantity of people with the surname Wathier that we can find in each country can help us discern the origin of the surname Wathier, as logic tells us that the place with the most people surnamed Wathier will be the country or area of origin of the surname Wathier.