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 黒川郡大和町 落合桧和田八幡堂の名字

About 30 【千坂】5
About 10 【小川】7
About 10 【三橋】6
About 10 【曽根】6
Very rare 【安斎】5
Very rare 【加藤】7
Very rare 【佐々木】7
Very rare 【進藤】6
Very rare 【瀬戸】6
Very rare 【野地】5
Very rare 【森】7