Etymology and distribution of 夛井.

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

Ishikawa-ken Suzu-shi , Ehime-ken Niihama-shi · Fukuoka-ken .

① There is an example of using a "valley" at a store of a shop name.

② Ibaraki-ken Kamisu-shi Birth of Okunotani. Place name with the name of "Okinoya" recorded in the Azuchi-Momoyama period. It is distributed in the same place.

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

出戸端 Detobata reference.