Etymology and distribution of 堂ノ口.

Dounokuchi 【堂ノ口】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Hiroshima-ken , Shimane-ken . Korean type . Originated in the Republic of Korea Gyeonggi Province Paju (aka: Posan) city. Hiroshima-ken There is a record of naturalization on April 2, 1982 at Takehara-shi . The real name is Yoon. 尹 In reference.