Etymology and distribution of Japanese surnames.

The Japanese surnames etymology dictionary.
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茨城県 下妻市 桐ケ瀬の名字

About 60 【大里】5
About 40 【松本】7
About 30 【大島】6
About 30 【斎藤】7
About 30 【本橋】6
About 30 【青田】5
About 20 【門井】5
About 20 【矢中】3
About 20 【杉山】7
About 10 【上野】6
About 10 【荒川】6
About 10 【小倉】6
About 10 【木村】7
Very rare 【海老沢】5
Very rare 【倉持】6
Very rare 【齋藤】6
Very rare 【須藤】6
Very rare 【関】6
Very rare 【高島】6
Very rare 【田辺】6
Very rare 【野村】6
Very rare 【箱森】3
Very rare 【森】7