Etymology and distribution of 大当.

Ootou 【大当】^{レベル4
About 500}  The Japanese surnames etymology dictionary.

Aomori-ken , Iwate-ken , Hokkaidou .

① Aomori-ken Hirosaki-shi birth of Otomo. A place name with a record since the Warring States Period.

② Iwate-ken Rikuzentakata-shi Origin of Ogotomachi . A place name with a record since the Warring States Period.

* Iwate-ken Toono-shi Origin of Ogotomachi . A place name with a record since the Warring States Period. It was in the Sengoku period in the same place.

Ooatari 【大当】^{レベル4
About 500}  The Japanese surnames etymology dictionary.

Shiga-ken , Oosaka-fu . Terrain . From a long long back. Shiga-ken Nagahama-shi Gono cho is based.

Daitou 【大当】^{レベル4
About 500}  The Japanese surnames etymology dictionary.

Gifu-ken Gero-shi · Aichi-ken . Terrain . From the temple and the dong. Gifu-ken There is distribution in Gero-shi Miyaji.