Etymology and distribution of 烏帽子.

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
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Ratio of 烏帽子.

カンマ区切りで複数の名字を指定できます。

Etymology of 烏帽子

Distribution of 烏帽子
Ranking
1 Nara-ken(0.00148%)
2 Kagoshima-ken(0.000814%)
3 Hokkaidou(0.00014%)
4 Fukuoka-ken(Very rare)
5 Chiba-ken(Very rare)