Etymology and distribution of 谷窪.

Tanikubo 【谷窪】^{レベル2
About 20}  The Japanese surnames etymology dictionary.

Oosaka-fu Sen'nan-gun Misaki-chou . Heteromorphic form of 中小路 to medium. Estimated change from Nakashoji to Nakashioji pronunciation around the Edo period. Oosaka-fu Sen'nan-gun Misaki-chou Honori is based. There is a 中小路 town last name in the same place. 中小路 Nakakouji reference.