Etymology and distribution of 木落.

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

Ratio of 木落.

カンマ区切りで複数の名字を指定できます。

Etymology of 木落

Distribution of 木落
Ranking
1 Kagoshima-ken(0.00163%)
2 Yamaguchi-ken(0.000716%)
3 Aichi-ken(0.000538%)
4 Nagasaki-ken(0.000258%)
5 Hyougo-ken(0.000246%)
6 Gifu-ken(0.000189%)
7 Hiroshima-ken(0.000144%)
8 Shizuoka-ken(0.000111%)
9 Fukuoka-ken(Very rare)
10 Chiba-ken(Very rare)
11 Toukyou-to(Very rare)