Thanks to this world map that shows the density of people with the surname Tonnu in different countries, you can get an idea not only of the popularity of the surname Tonnu in each country but also of the different migrations of people surnamed Tonnu.
The quantity of people with the surname Tonnu that we can find in each country can help us discern the origin of the surname Tonnu, as logic tells us that the place with the most people surnamed Tonnu will be the country or area of origin of the surname Tonnu.
Globalization can make the surname Tonnu be found in almost every country around the globe, but being able to see the density of people residing in a country with the surname Tonnu greatly aids all those who seek a deeper knowledge about the surname Tonnu.