Etymology and distribution of 竜円.

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
↑オフライン検索できるアプリもどうぞ
在日通名大全

日本初、在日通名の研究書「在日通名大全」発売中!
ネットの電話帳 住宅地図 マッポン!

「竜円」さんの名字の分布数。

カンマ区切りで複数の名字を指定できます。

Etymology of 竜円

Distribution of 竜円
Ranking
1 Tagawa-gun Kawasaki-machi(About 50)
2 Kakogawa-shi(About 10)
2 Kitakyuushuu-shi Yahatanishi-ku(About 10)
2 Kitakyuushuu-shi Kokuraminami-ku(About 10)
2 Oomuta-shi(About 10)
6 Kyouto-shi Yamashina-ku(Very rare)
6 Ichikawa-shi(Very rare)
6 Taketa-shi(Very rare)
6 Shimonoseki-shi(Very rare)
6 Fukuyama-shi(Very rare)
6 Kasugai-shi(Very rare)
6 Hachiouji-shi(Very rare)
6 Konan-shi(Very rare)
6 Isehara-shi(Very rare)
6 Kurume-shi(Very rare)
6 Kitakyuushuu-shi Tobata-ku(Very rare)
6 Kasuya-gun Shinguu-machi(Very rare)
6 Sasebo-shi(Very rare)
6 Oomura-shi(Very rare)
6 Suzaka-shi(Very rare)