Etymology and distribution of 足助.

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!

「足助」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 足助

Distribution of 足助
Ranking
1 Nagano-ken(About 500)
2 Toukyou-to(About 90)
3 Tochigi-ken(About 70)
3 Saitama-ken(About 70)
5 Hokkaidou(About 70)
6 Kanagawa-ken(About 60)
7 Chiba-ken(About 40)
8 Hiroshima-ken(About 30)
9 Aichi-ken(About 30)
10 Oosaka-fu(About 30)
11 Kyouto-fu(About 20)
12 Shizuoka-ken(About 10)
12 Gunma-ken(About 10)
14 Ibaraki-ken(About 10)
14 Fukushima-ken(About 10)
14 Wakayama-ken(About 10)
14 Hyougo-ken(About 10)
18 Kagoshima-ken(Very rare)
18 Aomori-ken(Very rare)
18 Shiga-ken(Very rare)
18 Ehime-ken(Very rare)
18 Tokushima-ken(Very rare)
18 Okayama-ken(Very rare)
18 Gifu-ken(Very rare)
18 Yamaguchi-ken(Very rare)
18 Miyagi-ken(Very rare)
18 Ooita-ken(Very rare)