Oogi 【大樹】3 The Japanese surnames etymology dictionary.
② Topography . A variant of 岡本 . Tokushima-ken Mima-gun Tsurugi-chou Sadako Noriko Tani · Nishiko Valley tells Meiji New surname in the north. From the Okamoto gate of the gate division system that was in the Edo period. An example of the location of the gate. Kagoshima-ken Ibusuki-shi Senda, Kagoshima-ken Kanoya-shi Yokoyama-cho, Kagoshima-ken Soo-shi Sueyoshi cho Sugawa, Kagoshima-ken Kimotsuki-gun Higashikushira-chou Iwahiro.