Etymology and distribution of 口輪.

Kuchiwa 【口輪】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Shizuoka-ken , Kanagawa-ken . Variety of 小長谷 . Shizuoka-ken Fuji-shi Nakano -gou is based. Tell them that they are groundbreaking in the same place. Shizuoka-ken Kakegawa-shi was in the Edo period. 小長谷 Konagaya reference.