Etymology and distribution of 切浜.

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

Aichi-ken , Gifu-ken , Nagano-ken . A variant of 小坂井 . 小坂井 Kosakai reference.

※ Nagano-ken Iiyama-shi The Toyoda Border is a geographical name with a record since the North-South morning era. The place name was also written as "Kosakai".