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 西白河郡泉崎村 太田川居平の名字

About 40 【小針】5
About 30 【久保木】5
About 30 【溝井】5
About 30 【小林】7
About 10 【大森】6
About 10 【藤原】7
About 10 【辺見】5
Very rare 【伊倉】5
Very rare 【石射】3
Very rare 【小山】6
Very rare 【酒井】7
Very rare 【須藤】6
Very rare 【関根】6
Very rare 【深谷】6
Very rare 【渡辺】7