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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愛知県 名古屋市中川区 富田町千音寺東屋敷の名字

About 30 【横井】6
About 10 【角田】6
Very rare 【千島】5
Very rare 【服部】6
Very rare 【水野】6
Very rare 【宮田】6
Very rare 【森】7