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 紫波郡紫波町 上平沢馬場の名字

About 20 【小田中】5
About 10 【佐藤】7
Very rare 【上山】6
Very rare 【吉田】7
Very rare 【工藤】7
Very rare 【高橋】7
Very rare 【俵】5
Very rare 【渡辺】7