Etymology and distribution of Japanese surnames.

The Japanese surnames etymology dictionary.
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栃木県 真岡市 沖の名字

About 70 【星野】6
About 40 【国母】3
About 30 【須藤】6
About 30 【海老原】6
About 30 【岩井】6
About 20 【保坂】6
About 20 【松山】6
About 10 【一木】5
About 10 【塚田】6
About 10 【上野】6
About 10 【岡崎】6
About 10 【吉田】7
About 10 【谷中】5
About 10 【土井】6
About 10 【直井】5
About 10 【早瀬】5
About 10 【芳士戸】3
About 10 【細島】4
About 10 【皆川】6
Very rare 【上井】5
Very rare 【石川】7
Very rare 【石崎】6
Very rare 【岩井田】4
Very rare 【折橋】4
Very rare 【木村】7
Very rare 【近内】5
Very rare 【佐藤】7
Very rare 【高橋】7
Very rare 【柳田】6