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
↑オフライン検索できるアプリもどうぞ

新潟県 十日町市 坪野の名字

About 40 【村山】6
About 10 【福原】6
About 10 【佐藤】7
Very rare 【古地】4
Very rare 【村井】6