Etymology and distribution of 蔡陸.

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

Kagawa-ken , Oosaka-fu , Gifu-ken . Distribution including tokazu as well. Toichi is rare.

① Birth of Kouchi-ken Nankoku-shi city (Tooti). A place name with a record since the Kamakura period.

② Nara-ken birthplace of Kashihara-shi city (Toyoichi) town. Place name with a record since the Kofun period. The place name was written as "far city", "Fujichi" as well, and there were pronunciation of Tooti and Touichi.