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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宮城県 栗原市 上畑岡夷穴の名字

About 70 【高橋】7
About 30 【岩松】5
About 20 【小野寺】6
About 20 【千葉】6
About 10 【二階堂】5
About 10 【佐々木】7
Very rare 【石垣】6
Very rare 【遠藤】7
Very rare 【曽根】6
Very rare 【藤原】7