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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岩手県 花巻市 東十二丁目第13地割の名字

About 60 【古川】6
About 50 【佐藤】7
About 30 【小田島】5
About 20 【照井】5
About 10 【鴨沢】3
About 10 【高橋】7
Very rare 【市川】6
Very rare 【千葉】6
Very rare 【根子】4
Very rare 【福盛田】3