Etymology and distribution of 七納.

Shichinou 【七納】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Hiroshima-ken Hatsukaichi-shi · Hyougo-ken · Toukyou-to . Distribution including Zeni.

① Sina series . Occupation . From Cengfu which governed the finances at the Sina of the Zhou period. Chinas are Chen. Kanagawa-ken Yokohama-shi Distributed in Yamashita-cho, Naka-ku.

② Korean type . Synopsis and same source. Korea sound is Jeong.

③ Kumamoto-ken Kikuchi-shi Mr. Yoshie Koshi's town in the Northeastern region (formerly Mutsuokuni) in the Azuchi-Momoyama period tells that there were golden name, silver name, copper name, and money surname. 金 Kon reference. 銀 Gin reference. 銅 Akagane reference.