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