Etymology and distribution of 毛谷.

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 毛谷.

カンマ区切りで複数の名字を指定できます。

Etymology of 毛谷

Distribution of 毛谷
Ranking
1 Kagawa-ken(0.00115%)
2 Fukuoka-ken(0.000395%)
3 Ooita-ken(0.000322%)
4 Hiroshima-ken(0.000288%)
5 Oosaka-fu(0.00023%)
6 Mie-ken(0.000219%)
7 Okayama-ken(0.000203%)
8 Gunma-ken(0.000203%)
9 Hyougo-ken(0.000164%)
10 Aichi-ken(Very rare)