Etymology and distribution of 伊井中.

Iinaka 【伊井中】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Wakayama-ken Arida-gun Aridagawa-chou . Wakayama-ken Arida-gun Aridagawa-chou Distributed in Yoshiwara. 池尻 surname is on the same place. 池尻 Ikejiri reference.