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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香川県 善通寺市 生野町上原の名字

About 20 【横田】6
About 10 【片岡】6
Very rare 【今田】6
Very rare 【尾松】4
Very rare 【森】7
Very rare 【森元】5