Etymology and distribution of 当坂.

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

Fukuoka-ken , Ooita-ken , Toukyou-to .

① Ooita-ken Nakatsu-shi Origin of Noyori. A place name with a record since the Edo period.

② Mie-ken Ise-shi Birth of Nishihamahama Town (formerly Noyori). A place name with a record since the Kamakura period. The place name was also written as "entrance". He was in the Heian period.