Etymology and distribution of 一間.

Ichima 【一間】^{レベル2
About 30}  The Japanese surnames etymology dictionary.

Hyougo-ken , Ishikawa-ken , Oosaka-fu .

① Toyama-ken Toyama-shi Toyama-shi Inowa is a place name with a record since the Muromachi Period. Aichi-ken Nagoya-shi Honmaru Honmaru was in the Edo period in the Owarii clan in the Clan office.

② Nara-ken Nara-shi Originated from Inari valley in Yaginose-cho.

③ Kagoshima-ken Makurazaki-shi Originated from Uchiya Susumu, a small figure in Kanayama Town.

Kazuma 【一間】^{レベル2
About 30}  The Japanese surnames etymology dictionary.

架谷 Hasatani reference.