The quantity of people with the surname Deay that we can find in each country can help us discern the origin of the surname Deay, as logic tells us that the place with the most people surnamed Deay will be the country or area of origin of the surname Deay.
Locating at a single glance the countries where the surname Deay is more abundant, as well as the areas of the globe where there are hardly any people with the surname Deay, is of great utility for individuals interested in surnames, and specifically in the surname Deay, as it allows them to quickly and easily visualize the data and its distribution."