Etymology and distribution of 七門.

Nanakado 【七門】^{レベル2
About 20}  The Japanese surnames etymology dictionary.

Yamaguchi-ken Hagi-shi · Oosaka-fu . Occupation . From the house of the barn. Yamaguchi-ken Hagi-shi Distributed in Tsubaki - e.

* There was a case called by Mr. Yamaguchi belonging to the Murayama party of the Musashi Nanpu party, which took the ground near Toukyou-to Nishitama-gun Mizuho-machi as the basis for the Heian period and the Kamakura period. 山口 Yamaguchi reference.