Etymology and distribution of 木田山.

Kidayama 【木田山】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Niigata-ken , Yamagata-ken , Hyougo-ken .

① Niigata-ken Jouetsu-shi Beginning with Kuroi. A place name with a record since the Warring States Period.

② Hyougo-ken Tanba-shi Kuroi birth originated in Kasuga-machi. A place name with a record since the Muromachi period. The place name was also called "Kurui".