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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山形県 鶴岡市 民田村下の名字

About 30 【金丸】6
About 20 【五十嵐】6
About 20 【後藤】7
About 10 【佐藤】7
About 10 【斎藤】7
Very rare 【上野】6
Very rare 【阿部】7
Very rare 【山口】7