Etymology and distribution of 桒島.

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

Akita-ken , Saitama-ken .

① Originated from the vicinity of the Yoshikawa river flowing through Akita-ken Yurihonjou-shi (formerly Koichi). A place name with a record since the Edo period. "Pebbles (coins)" in the Nanboku era era is a place where the same place is determined.

② In Toyama-ken , it is Nishi. Toyama-ken Takaoka-shi Originated from Koichi (Neyoshi) in the red circle of Fukuoka Town.

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

Hiroshima-ken Aki-gun Fuchuu-chou . Thing . From a tree with five leaves. Hiroshima-ken Aki-gun Fuchuu-chou Distributed in Osu.