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