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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新潟県 加茂市 猿毛の名字

About 50 【志田】6
About 20 【坪谷】5
About 20 【番場】5
About 10 【飯岡】5
About 10 【半間】3
Very rare 【井伊】5
Very rare 【今井】7
Very rare 【川崎】6