Etymology and distribution of 勝岡.

Katsuoka 【勝岡】^{レベル4
About 1,300}  The Japanese surnames etymology dictionary.

Nagano-ken , Toukyou-to , Kagoshima-ken .

① Birth of Yamanashi-ken Koufu-shi Kawakubo-cho. A place name with a record since the Edo period. Last name was also written "Kawakubo".

② Topography . From rivers and sinks. In Kouchi-ken during the Warring States Period, Kyouto-fu Kyouto-shi was in the Edo era. Kagoshima-ken Kanoya-shi From Kawabunomon gate of the gate division system which was in the Kusho-cho Townscape in the Edo period.