Cognomen コウタン (コウタン ) , all around the world, is a very rare surname. The family name コウタン is habitual in Eastern Asia, particularly Japan, where it is a very rare surname.
Koutan, 光旦, and 高端
) , all around the world, is a very rare surname. The family name コウタン is habitual in Eastern Asia, particularly Japan, where it is a very rare surname.