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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富山県 黒部市 鏡野の名字

About 30 【島】6
About 20 【尾花】5
About 20 【中村】7
About 10 【前沢】5
Very rare 【沖】6
Very rare 【吉野】6
Very rare 【山田】7