Etymology and distribution of 牛丸.

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!

「牛丸」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 牛丸

Distribution of 牛丸
Ranking
1 Gifu-ken(0.0509%)
2 Nagano-ken(0.0192%)
3 Toyama-ken(0.00548%)
4 Kumamoto-ken(0.00365%)
5 Aichi-ken(0.00296%)
6 Tochigi-ken(0.00288%)
7 Yamaguchi-ken(0.00239%)
8 Hyougo-ken(0.00238%)
9 Toukyou-to(0.00199%)
10 Saga-ken(0.00197%)
11 Ishikawa-ken(0.00171%)
12 Gunma-ken(0.00162%)
13 Nagasaki-ken(0.00155%)
14 Akita-ken(0.0015%)
15 Kanagawa-ken(0.00147%)
16 Yamanashi-ken(0.00127%)
17 Saitama-ken(0.00125%)
18 Oosaka-fu(0.00121%)
19 Fukushima-ken(0.0012%)
20 Hokkaidou(0.00105%)
21 Ibaraki-ken(0.000997%)
22 Nara-ken(0.000891%)
23 Chiba-ken(0.000882%)
24 Fukuoka-ken(0.000791%)
25 Shizuoka-ken(0.000777%)
26 Shiga-ken(0.000649%)
27 Fukui-ken(0.000478%)
28 Wakayama-ken(0.000342%)
29 Kyouto-fu(0.000333%)
30 Mie-ken(0.000219%)
31 Miyagi-ken(0.000208%)
32 Okayama-ken(0.000203%)
33 Niigata-ken(0.000161%)
34 Hiroshima-ken(0.000144%)