Etymology and distribution of 一坂.

Ichisaka 【一坂】^{レベル3
About 140}  The Japanese surnames etymology dictionary.

Kumamoto-ken , Hokkaidou , Hyougo-ken .

① Hyougo-ken Yabu-shi birth of Inazu. A place name with a record in the notation of "Inatsu" during the Warring States Period. Miyazaki - ken Miyazaki - shi Kiyotake Town Kiyotake castle 's castle owner Azuchi Momoyama period, Kumamoto - ken Kumamoto - shi Chuo - ku Honmaru was in the Edo era in the Kumamoto samurai of the clan' s office. Tell the same clan that Miyazaki-ken is out.

② Fukui-ken Fukui-shi Origin of Inazu town. A place name with a record since the Kamakura period.