Etymology and distribution of Japanese surnames.

The Japanese surnames etymology dictionary.
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愛知県 西尾市 中外沢自休の名字

About 50 【田中】7
About 40 【外山】6
About 30 【沢田】6
About 10 【高瀬】6
Very rare 【上田】7
Very rare 【奥村】6
Very rare 【新海】5
Very rare 【杉本】6
Very rare 【服部】6
Very rare 【早川】6
Very rare 【藤田】7
Very rare 【村井】6
Very rare 【山田】7