Etymology and distribution of 四度.

Shido 【四度】^{レベル2
About 20}  The Japanese surnames etymology dictionary.

Aichi-ken , Yamagata-ken , Toukyou-to .

① Topography . From the left and right fields. Aichi-ken Nishio-shi It was in Warring States Period in Muromachi. I will tell Mr. Fujiwara in the Muromachi era in the same place. 藤原 Fujiwara reference.

② Origin of Ooita-ken Ooita-shi Kota (Soda). A place name with a record since the Edo period. Tradition in Shimane-ken western part (formerly Iwami-kuni). Kumamoto-ken Yatsushiro-shi Kamamachi In upper mirror it is told that they were engaged in agriculture by grass- roots.