The quantity of people with the surname Gianilli that we can find in each country can help us discern the origin of the surname Gianilli, as logic tells us that the place with the most people surnamed Gianilli will be the country or area of origin of the surname Gianilli.
Globalization can make the surname Gianilli be found in almost every country around the globe, but being able to see the density of people residing in a country with the surname Gianilli greatly aids all those who seek a deeper knowledge about the surname Gianilli.