Etymology and distribution of 桒木.

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

Fukushima-ken , Aichi-ken .

① There is 小山 surname. Oosaka-fu Sakai-shi Pottery It was in the northern part of the Edo period.

② Tochigi-ken Shimotsuke-shi Originated from the vicinity of the mountain castle in Okinoyama (formerly Kozan). A place name with a record in the Warring States Period.