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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京都府 亀岡市 馬路町御蔵の名字

About 30 【中沢】6
About 10 【畑】6
About 10 【相原】6
Very rare 【桂】5
Very rare 【河原】6
Very rare 【岸本】6
Very rare 【鳴滝】4
Very rare 【人見】5
Very rare 【和田】7