Etymology and distribution of 巨津.

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

Yamaguchi-ken Shimonoseki-shi , Hiroshima-ken Hiroshima-shi . There is 小田 surname. Yamaguchi - ken Yanai - shi Ike Nagano tells that he was engaged in agriculture. Estimated in the Edo period. 小田 Oda reference.