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