Etymology and distribution of 大井口.

Daiiguchi 【大井口】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Kagoshima-ken .

① Kagoshima-ken Satsumasendai-shi Originated from the small branch of Goshiro-cho.

② Kagoshima-ken Minamisatsuma-shi Originated from Noji Tanuma, a small alphabet of Koneda Kominato. In the same era there was a gate of the gate division system in the Edo period.

③ things . From the gate of the gate division system which was in the Edo period. An example of the location of the gate. Kagoshima-ken Minamisatsuma-shi Kaseda staircase town, Kagoshima-ken Aira-gun Yuusui-chou Kawanishi. "The name" of the gate name is favorable. There are examples where toe is "pass" and bow means "bou".