Thanks to this world map that shows the density of people with the surname Quernel in different countries, you can get an idea not only of the popularity of the surname Quernel in each country but also of the different migrations of people surnamed Quernel.
The quantity of people with the surname Quernel that we can find in each country can help us discern the origin of the surname Quernel, as logic tells us that the place with the most people surnamed Quernel will be the country or area of origin of the surname Quernel.