Etymology and distribution of Japanese surnames.

The Japanese surnames etymology dictionary.
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青森県 つがる市 上古川幾山の名字

About 30 【小関】6
About 10 【成田】6
About 10 【石岡】5
About 10 【佐々木】7
About 10 【柴谷】5
About 10 【高橋】7
Very rare 【阿部】7
Very rare 【小笠原】6
Very rare 【工藤】7
Very rare 【古坂】4
Very rare 【島谷】5
Very rare 【長尾】6
Very rare 【中野】7
Very rare 【箱田】5