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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福井県 三方上中郡若狭町 小川の名字

About 130 【松本】7
About 50 【安原】5
About 40 【西村】7
About 20 【古崎】4
About 10 【杉山】7
About 10 【浜頭】3
About 10 【浜本】6
About 10 【物部】4
Very rare 【江村】5
Very rare 【大江】6
Very rare 【兼田】5
Very rare 【下】5
Very rare 【中村】7
Very rare 【見本】3
Very rare 【森下】6