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