Etymology and distribution of 久才.

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!

「久才」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 久才

Distribution of 久才
Ranking
1 Sakai-shi(About 30)
2 Kurobe-shi(About 20)
3 Toyama-shi(About 10)
4 Amagasaki-shi(Very rare)
4 Hakodate-shi(Very rare)
4 Obihiro-shi(Very rare)
4 Sapporo-shi Higashi-ku(Very rare)
4 Sapporo-shi Nishi-ku(Very rare)
4 Ishikari-shi(Very rare)
4 Kushiro-shi(Very rare)
4 Hashimoto-shi(Very rare)
4 Katano-shi(Very rare)
4 Oosaka-shi Taishou-ku(Very rare)
4 Kishiwada-shi(Very rare)
4 Izumisano-shi(Very rare)
4 Han'nan-shi(Very rare)
4 Namerikawa-shi(Very rare)
4 Uodzu-shi(Very rare)
4 Yokohama-shi Totsuka-ku(Very rare)