Etymology and distribution of 惟任.

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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Popuration of 惟任.

カンマ区切りで複数の名字を指定できます。

Etymology of 惟任

Distribution of 惟任
Ranking
1 Ehime-ken(About 50)
2 Oosaka-fu(About 30)
3 Hyougo-ken(About 30)
4 Saitama-ken(About 10)
4 Kagawa-ken(About 10)
6 Kyouto-fu(Very rare)
6 Saga-ken(Very rare)
6 Nara-ken(Very rare)
6 Aichi-ken(Very rare)
6 Fukuoka-ken(Very rare)
6 Nagano-ken(Very rare)