Using graphic elements like this world map, to see in which countries or regions of the world the surname De-toro is more common, is of great help.
The quantity of people with the surname De-toro that we can find in each country can help us discern the origin of the surname De-toro, as logic tells us that the place with the most people surnamed De-toro will be the country or area of origin of the surname De-toro.