Etymology and distribution of 大子.

Ooji 【大子】^{レベル3
About 50}  The Japanese surnames etymology dictionary.

Kagoshima-ken Akune-shi , Oosaka-fu , Okayama-ken .

① Kagoshima-ken Akune-shi birth of Nishigami fall. In the same era there was a fallow gate in the Edo era.

② Creation . Okayama-ken In Maniwa-shi Miyaji tells that the soldier has come and resigned using "fall". Estimated in the Warring States Period. There is also a story that it became a blacksmith later.

③ Kanagawa-ken Hadano-shi It was in Soneya during the Edo period.

Ooko 【大子】^{レベル3
About 50}  The Japanese surnames etymology dictionary.

Ibaraki-ken . A variant of 小曽納 . It was in the Azuchi-Momoyama period as a vassal of Mr. Satake based on Ibaraki-ken . 小曽納 Osonou reference.