Etymology and distribution of Japanese surnames.

The Japanese surnames etymology dictionary.
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長野県 伊那市 富県桜井の名字

About 100 【鹿野】5
About 60 【桜井】6
About 40 【春日】6
About 40 【藤沢】6
About 30 【伊沢】5
About 30 【黒河内】4
About 30 【下平】5
About 10 【中尾】6
About 10 【岡野】6
About 10 【丸山】7
About 10 【渡辺】7
Very rare 【石田】7
Very rare 【伊藤】7
Very rare 【久保田】6
Very rare 【櫻井】5
Very rare 【下尾】4
Very rare 【田畑】6
Very rare 【坪木】4
Very rare 【中村】7
Very rare 【中山】7
Very rare 【西澤】5
Very rare 【牧田】5
Very rare 【松本】7
Very rare 【森田】7
Very rare 【山岸】6
Very rare 【和田】7