Etymology and distribution of 初刀.

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

Shizuoka-ken , Kanagawa-ken , Kagoshima-ken . Ukai surname, 藤原 surname. 鵜飼 Ukai reference. 藤原 Fujiwara reference.

※ Hiroshima-ken Hiroshima-shi Naka-ku Kamamachi was in the Edo period in the Hiroshima samurai of the clan office.