Etymology and distribution of 古門.

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
書籍 日本姓氏語源辞典 第三版 発売中! ご購入はこちらから

Popuration of 古門.

カンマ区切りで複数の名字を指定できます。

Etymology of 古門

Distribution of 古門
Ranking
1 Fukuoka-ken(About 400)
2 Hyougo-ken(About 300)
3 Ooita-ken(About 140)
4 Oosaka-fu(About 80)
5 Toukyou-to(About 60)
6 Hiroshima-ken(About 50)
7 Mie-ken(About 40)
8 Saitama-ken(About 30)
9 Yamaguchi-ken(About 30)
9 Kumamoto-ken(About 30)
11 Kanagawa-ken(About 20)
12 Kyouto-fu(About 20)
12 Tottori-ken(About 20)
14 Okayama-ken(About 10)
14 Shimane-ken(About 10)
14 Aichi-ken(About 10)
17 Chiba-ken(About 10)
17 Toyama-ken(About 10)
17 Shiga-ken(About 10)
17 Nagasaki-ken(About 10)
17 Shizuoka-ken(About 10)
22 Wakayama-ken(Very rare)
22 Nara-ken(Very rare)
22 Okinawa-ken(Very rare)