Etymology and distribution of 窪倉.

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!

「窪倉」さんの名字の分布比率。

カンマ区切りで複数の名字を指定できます。

Etymology of 窪倉

Distribution of 窪倉
Ranking
1 Kitaadzumi-gun Hakuba-mura(0.0695%)
2 Kawasaki-shi Takatsu-ku(0.0302%)
3 Ashigarakami-gun Yamakita-machi(0.0261%)
4 Odawara-shi(0.0198%)
5 Naka-gun Ninomiya-machi(0.0131%)
6 Kouza-gun Samukawa-machi(0.00999%)
7 Kawasaki-shi Tama-ku(0.00953%)
8 Minamiashigara-shi(0.0086%)
9 Yuuki-shi(0.00801%)
10 Yokohama-shi Kanazawa-ku(0.00725%)
11 Imari-shi(0.00701%)
12 Yokohama-shi Nishi-ku(0.00684%)
13 Yokohama-shi Tsudzuki-ku(0.00441%)
14 Yokohama-shi Izumi-ku(0.00348%)
15 Yokohama-shi Midori-ku(0.00346%)
16 Iruma-shi(0.0034%)
17 Asahikawa-shi(0.00311%)
18 Kawasaki-shi Miyamae-ku(0.00308%)
19 Kawasaki-shi Kawasaki-ku(0.00276%)
20 Yokohama-shi Hodogaya-ku(0.00257%)
21 Yokohama-shi Kanagawa-ku(0.00256%)
22 Yokohama-shi Tsurumi-ku(0.00218%)
23 Chigasaki-shi(0.00214%)
24 Yokohama-shi Totsuka-ku(0.0021%)
25 Yokosuka-shi(0.00204%)
26 Yokohama-shi Kouhoku-ku(0.00197%)
27 Koshigaya-shi(0.00177%)
28 Fujisawa-shi(0.00133%)
29 Hachiouji-shi(0.00102%)
30 Higashioosaka-shi(0.000934%)
31 Sagamihara-shi(0.000829%)