Surname 默温 (Merwin 
, 默温 
) , around the globe, is quite a rare family name. The family name 默温 is habitual in Namibia, where it is quite a rare surname, Venezuela, where it is a rare surname, and the United States. In absolute terms, it is the most numerous in the United States, Venezuela, and Canada. Also, 默温 is the forename as well as the last name.