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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千葉県 山武郡横芝光町 牛熊の名字

About 50 【鈴木】7
About 40 【土屋】6
About 30 【行方】5
About 20 【田鍋】5
About 10 【宇井】5
About 10 【桑原】6
About 10 【大木】6
About 10 【勝田】6
About 10 【林】7
Very rare 【松岡】6