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