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