Etymology and distribution of 大部.

Oobu 【大部】^{レベル5
About 2,800}  The Japanese surnames etymology dictionary.

Hokkaidou , Tochigi-ken Nasushiobara-shi , Toukyou-to . Terrain . Add "Oka" to Ono. Akita-ken Akita-shi Chiaki Park was in the Edo period in the clan san Kubota of the Clan office. Tell her that the same clan was Ono surname. Estimated from tradition Ibaraki-ken Muromachi era. It was in the Azuchi-Momoyama period as a vassal of Mr. Satake based on Ibaraki-ken . 小野 Ono reference.

※ There was a belief that Mr. Satake made Onooka surname again from 1688 to 1704 (Genroku year) after Mr. Satake renamed Onooka surname in the Muromachi era and Ichinoka of Ibaraki-ken (formerly Hitachi country) . Location unknown. 佐竹 Satake reference.

Oobe 【大部】^{レベル5
About 2,800}  The Japanese surnames etymology dictionary.

Tochigi-ken , Nagano-ken , Nagasaki-ken . Heterogeneity of 小野沢 . Tochigi-ken Tochigi-shi Iwawune-cho Narishi tells me that Meiji New Last Name changed from Onozawa surname. Saitama-ken Higashimatsuyama-shi Aozora castle in the stone bridge tells that Mr. Azawa built the Muromachi period.

Daibu 【大部】^{レベル5
About 2,800}  The Japanese surnames etymology dictionary.

出塚 Idedzuka reference.