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