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