In this world map, you can check at a single glance which countries have more people with the surname Yerly. As you can see, it's effortless to notice which countries have a higher number of people carrying the Yerly surname.
The quantity of people with the surname Yerly that we can find in each country can help us discern the origin of the surname Yerly, as logic tells us that the place with the most people surnamed Yerly will be the country or area of origin of the surname Yerly.