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