Etymology and distribution of 聖徳.

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 聖徳.

カンマ区切りで複数の名字を指定できます。

Etymology of 聖徳

Distribution of 聖徳
Ranking
1 Seiyo-shi(About 20)
2 Oosaka-shi Higashinari-ku(About 10)
2 Matsuyama-shi(About 10)
4 Itami-shi(Very rare)
4 Katou-shi(Very rare)
4 Takaradzuka-shi(Very rare)
4 Akashi-shi(Very rare)
4 Sorachishi-chou Naganuma-chou(Very rare)
4 Settsu-shi(Very rare)
4 Toyonaka-shi(Very rare)