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 南相馬市 小谷江戸内の名字

About 20 【高野】6
About 10 【佐藤】7
About 10 【石井】7
About 10 【一刀】3
About 10 【門馬】5
About 10 【鈴木】7
Very rare 【島】6