Etymology and distribution of 由宇.

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 由宇.

カンマ区切りで複数の名字を指定できます。

Etymology of 由宇

Distribution of 由宇
Ranking
1 Tokushima-ken(About 30)
2 Tottori-ken(About 20)
3 Oosaka-fu(About 10)
4 Saitama-ken(About 10)
4 Yamaguchi-ken(About 10)
6 Hiroshima-ken(Very rare)
6 Kumamoto-ken(Very rare)
6 Kanagawa-ken(Very rare)
6 Fukuoka-ken(Very rare)