Etymology and distribution of 宇河.

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

Hokkaidou Tomakomai-shi , Iwate-ken Toono-shi . 宇夫方 family name last name. Iwate-ken In Toono-shi tells that the inside of Saga-ken Saga-shi castle was Saga clan of the clan government. 宇夫方 Ubukata reference.