Etymology and distribution of 竹巖.

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

Fukuoka-ken , Nagasaki-ken , Yamaguchi-ken . Kumamoto-ken Yamaga-shi The birth of Nakadomi Kamoto Town (Nakadomi). A place name with a record since the Edo period. The place name also pronounced Nakatomi. It was in the Edo period in the same place. Last name was also referred to as "Chubu". 中留 Nakadome reference. Fukuoka-ken Chikugo-shi Ida is based.