Etymology and distribution of 當重.

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

Hiroshima-ken , Ishikawa-ken .

① There is a virtue in the name of a man. Ehime-ken The regular name of Nakajima (formerly Mutsu Island) of Matsuyama-shi is a place name with a record since the Kamakura period.

② Ishikawa-ken Suzu-shi Originated from Nori Sado in Otani-cho. Tell him that he is the descendant of Heijutsu, the principal of the Heian period. In the estimation from tradition it was called the Kamakura period. 平 Taira reference.