Etymology and distribution of 井門.

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
在日通名大全

日本初、在日通名の研究書「在日通名大全」発売中!
ネットの電話帳 住宅地図 マッポン!

「井門」さんの名字の分布数。

カンマ区切りで複数の名字を指定できます。

Etymology of 井門

Distribution of 井門
Ranking
1 Ehime-ken(About 800)
2 Oosaka-fu(About 130)
3 Toukyou-to(About 120)
4 Shiga-ken(About 110)
5 Hiroshima-ken(About 70)
6 Hyougo-ken(About 70)
7 Ooita-ken(About 60)
8 Chiba-ken(About 40)
9 Kanagawa-ken(About 40)
10 Fukuoka-ken(About 30)
11 Kouchi-ken(About 30)
11 Nara-ken(About 30)
13 Aichi-ken(About 20)
13 Hokkaidou(About 20)
15 Okayama-ken(About 20)
15 Kyouto-fu(About 20)
17 Shizuoka-ken(About 10)
18 Nagano-ken(About 10)
18 Kumamoto-ken(About 10)
18 Yamaguchi-ken(About 10)
18 Mie-ken(About 10)
22 Kagawa-ken(Very rare)
22 Ibaraki-ken(Very rare)
22 Ishikawa-ken(Very rare)
22 Niigata-ken(Very rare)
22 Tokushima-ken(Very rare)
22 Miyazaki-ken(Very rare)
22 Miyagi-ken(Very rare)
22 Saitama-ken(Very rare)