Etymology and distribution of Japanese surnames.

The Japanese surnames etymology dictionary.
https://play.google.com/store/apps/details?id=info.jigensha.jcedfreeGoogle Play で手に入れよう https://apps.apple.com/us/app/id1471109324
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長野県 中野市 三ツ和北大熊の名字

About 70 【清水】7
About 30 【高田】7
About 20 【柴本】5
About 20 【木村】7
About 10 【太田】7
About 10 【中山】7
About 10 【山崎】7
Very rare 【大久保】6
Very rare 【金子】7
Very rare 【高橋】7