Kataoka 【潟岡】2 The Japanese surnames etymology dictionary.
① Topography . From the Kamanda gate of the gate division system that was in the Edo period. An example of the location of the gate. Kagoshima-ken Ichikikushikino-shi Osato, Kagoshima-ken Hioki-shi Higashiichiroko Yuda. The name of the gate is from gags and low wetlands.