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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石川県 羽咋郡志賀町 二所宮の名字

About 50 【政氏】4
About 40 【安中】5
About 40 【三原】6
About 20 【森井】5
About 10 【横山】7
About 10 【寺口】5
Very rare 【坂井】6
Very rare 【作田】5
Very rare 【坊城】2
Very rare 【山口】7
Very rare 【若狭】5