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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徳島県 勝浦郡勝浦町 三渓橘の名字

About 10 【北内】4
About 10 【定作】3
About 10 【中野】7
Very rare 【上田】7
Very rare 【門田】6
Very rare 【米田】6
Very rare 【坪井】6
Very rare 【西名】4
Very rare 【森本】6
Very rare 【柳沢】6