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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岡山県 岡山市 大崎の名字

About 50 【板野】5
About 30 【有松】5
About 30 【藤田】7
About 20 【中山】7
About 10 【河田】6
Very rare 【安永】5
Very rare 【草井】3
Very rare 【楢村】4