Etymology and distribution of 鶯地.

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

Saitama-ken Kawaguchi-shi . Nara-ken Nara-shi Origin of Kokogahara (Okigahara) town. In the Kamakura period the name of the place with the notation "Kohara" recorded. The place name was also written as "Okukehara". My last name was also pronounced Okigahara and it was also written as "Okuhara". 奥原 Okuhara reference.