Etymology and distribution of 古土井.

The Japanese surnames etymology dictionary.
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「古土井」さんの名字の分布数。

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Etymology of 古土井

Distribution of 古土井
Ranking
1 Kure-shi(About 60)
2 Aki-gun Kumano-chou(About 40)
3 Awaji-shi(About 10)
3 Koube-shi Kita-ku(About 10)
3 Oosaka-shi Taishou-ku(About 10)
3 Yasugi-shi(About 10)
3 Hiroshima-shi Aki-ku(About 10)
3 Higashihiroshima-shi(About 10)
9 Kyouto-shi Fushimi-ku(Very rare)
9 Koube-shi Nagata-ku(Very rare)
9 Yachiyo-shi(Very rare)
9 Settsu-shi(Very rare)
9 Miyazaki-shi(Very rare)
9 Maniwa-shi(Very rare)
9 Fuchuu-shi(Very rare)
9 Matsuyama-shi(Very rare)
9 Konan-shi(Very rare)
9 Kawasaki-shi Nakahara-ku(Very rare)