Etymology and distribution of 許山.

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

Popuration of 許山.

カンマ区切りで複数の名字を指定できます。

Etymology of 許山

Distribution of 許山
Ranking
1 Fukuoka-ken(About 80)
2 Yamanashi-ken(About 40)
3 Ooita-ken(About 10)
3 Kumamoto-ken(About 10)
5 Saga-ken(Very rare)
5 Saitama-ken(Very rare)
5 Kanagawa-ken(Very rare)
5 Shizuoka-ken(Very rare)