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