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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福島県 岩瀬郡天栄村 大里沢邸の名字

About 70 【大木】6
About 10 【石井】7
About 10 【行方】5
About 10 【小針】5
Very rare 【小森】6
Very rare 【春日】6
Very rare 【佐藤】7