Etymology and distribution of Japanese surnames.

The Japanese surnames etymology dictionary.
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新潟県 柏崎市 久米の名字

About 130 【池島】5
About 100 【長井】6
About 60 【池嶋】4
About 50 【小林】7
About 40 【鈴木】7
About 30 【有坂】5
About 30 【五位野】3
About 20 【曽村】3
About 10 【小山】6
About 10 【高橋】7
About 10 【宮崎】7
Very rare 【伊藤】7
Very rare 【斉藤】7
Very rare 【宮川】6