Etymology and distribution of 古俣.

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!

「古俣」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 古俣

Distribution of 古俣
Ranking
1 Niigata-ken(0.0727%)
2 Fukushima-ken(0.00542%)
3 Hokkaidou(0.00482%)
4 Toukyou-to(0.00323%)
5 Saitama-ken(0.00316%)
6 Chiba-ken(0.00203%)
7 Gunma-ken(0.00182%)
8 Kanagawa-ken(0.00178%)
9 Tochigi-ken(0.00133%)
10 Ibaraki-ken(0.00114%)
11 Shizuoka-ken(0.000777%)
12 Toyama-ken(0.000685%)
13 Ishikawa-ken(0.000683%)
14 Nagano-ken(0.000656%)
15 Tottori-ken(0.000606%)
16 Nara-ken(0.000594%)
17 Gifu-ken(0.000566%)
18 Fukui-ken(0.000478%)
19 Yamanashi-ken(0.000422%)
20 Wakayama-ken(0.000342%)
21 Yamagata-ken(0.000311%)
22 Aichi-ken(0.000269%)
23 Nagasaki-ken(0.000258%)
24 Oosaka-fu(0.00023%)
25 Miyagi-ken(0.000208%)
26 Okayama-ken(0.000203%)
27 Hyougo-ken(0.000164%)
28 Hiroshima-ken(0.000144%)
29 Fukuoka-ken(Very rare)