Etymology and distribution of Japanese surnames.

The Japanese surnames etymology dictionary.
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長野県 佐久市 中小田切の名字

About 200 【油井】5
About 100 【草間】5
About 90 【大工原】4
About 50 【清水】7
About 30 【井出】6
About 30 【桜井】6
About 20 【丸山】7
About 10 【小平】5
About 10 【小林】7
About 10 【黒沢】6
About 10 【高柳】6
About 10 【山口】7
Very rare 【芦沢】5
Very rare 【海野】6
Very rare 【有坂】5
Very rare 【市川】6
Very rare 【大村】6
Very rare 【沖津】5
Very rare 【小沢】6
Very rare 【加藤】7
Very rare 【吉田】7
Very rare 【小金沢】5
Very rare 【斎藤】7
Very rare 【篠原】6
Very rare 【三条】4
Very rare 【鈴木】7
Very rare 【須田】6
Very rare 【千葉】6
Very rare 【土屋】6
Very rare 【樋田】5
Very rare 【中島】7
Very rare 【畠山】6
Very rare 【林】7
Very rare 【望月】6
Very rare 【安井】6
Very rare 【山下】7