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