Etymology and distribution of 周洪.

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

Fukui-ken , Toukyou-to .

① things . Ehime-ken Tell Takanori Castle that was in Mt. Takari mountain of Matsuyama-shi . The same castle is recorded in 1181 (5 years of birth).

② There is 高輪 surname. 高輪 Takawa reference.