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 射水市 浄土寺東谷の名字

About 10 【道徳】3
About 10 【松井】6
Very rare 【角波】3
Very rare 【中波】3
Very rare 【松坂】5