Etymology and distribution of Japanese surnames.

The Japanese surnames etymology dictionary.
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大分県 宇佐市 定別当の名字

About 40 【永田】6
About 30 【井上】7
About 30 【藤野】6
About 20 【長田】6
About 20 【小仲】4
About 10 【岩谷】5
About 10 【麻生島】3
About 10 【寺野】5
Very rare 【麻生嶋】3
Very rare 【石部】5
Very rare 【長川】5
Very rare 【小中】5
Very rare 【川尻】5
Very rare 【先岡】3
Very rare 【西】6
Very rare 【長島】6