Family name 盖伦 (Galen 
, Guerin , Gaylen 
) , in the entire world, is a common surname. The surname 盖伦 is characteristic of France, where it is quite a common surname, Monaco, and Ireland (explore the name in all countries). Not in comparison with a country's population, it most frequently occurs in France, the United States, and Canada. Very seldom, 盖伦 is the forename as well as the last name.