Etymology and distribution of 八岡.

Yatsuoka 【八岡】^{レベル3
About 70}  The Japanese surnames etymology dictionary.

熊本県、和歌山県・東京都。ハチオカも含む分布。地形。八つの岡から。多いたとえとして「八」を使用する例あり。熊本県八代市東陽町河俣に分布あり。

Hachioka 【八岡】^{レベル3
About 70}  The Japanese surnames etymology dictionary.

Saitama-ken , Tottori-ken , Oosaka-fu .

① Saitama-ken Honjou-shi Originated from Yozo Yosuke's small figure Yoshioka (Tsuburaka). Saitama-ken Fukaya-shi I tell you that I came to Uenodai in the Kamakura period. Distribution including Tsuburaka also in same place.

② Heteromorphism of 丸岡 . Fukuoka-ken Kurume-shi Sasayama-machi was in the Edo period in the Kurume clan in the Clan office. Tell the same clan who lived in Maruoka Town of Fukui-ken Sakai-shi during the Warring States Period.

③ Oosaka-fu Toyono-gun Toyono-chou Originated from Maruokanochi (Maruokanouchi), a small figure of trees.

④ Topography . "Oka" is added to the circle which is the surname of Kagoshima-ken 's Amami archipelago. Estimated at the time of returning to Japan in 1953. Kagoshima-ken Ooshima-gun Isen-chou There is distribution in Konoshi. There was yen surname in the same place in 1879. 円 En reference.