Etymology and distribution of 大土井.

Oodoi 【大土井】^{レベル3
About 400}  The Japanese surnames etymology dictionary.

Hiroshima-ken , Fukuoka-ken . Hiroshima-ken Kure-shi Distributed within the broad stone. There is 小田 surname in the same place. Tell him that he used the shop name of Ueda at the same place during the Edo period. 小田 Oda reference.