Etymology and distribution of 桑中.

Kuwanaka 【桑中】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Oosaka-fu . Korean type . Korea originated in Paju City Gyeonggi Province Peupyeon face. "Pa" of PaPhei and "I" including Yun are used. Oosaka-fu Oosaka-shi There is a record of naturalization on Tennoji ward on September 5, 1980. The real name is Yoon. 尹 In reference.