Etymology and distribution of 牛若.

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!

「牛若」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 牛若

Distribution of 牛若
Ranking
1 Kamikawashi-chou Shimokawa-chou(0.134%)
2 Nyuu-gun Echizen-chou(0.121%)
3 Tenri-shi(0.0211%)
4 Sabae-shi(0.0187%)
5 Kitahiroshima-shi(0.0149%)
6 Fukui-shi(0.0124%)
7 Katsuragi-shi(0.0123%)
8 Rittou-shi(0.00905%)
9 Nomi-shi(0.00875%)
10 Kawasaki-shi Saiwai-ku(0.00745%)
11 Oosaka-shi Sumiyoshi-ku(0.00732%)
12 Fujimi-shi(0.00533%)
13 Oomura-shi(0.00518%)
14 Aira-shi(0.0049%)
15 Toukai-shi(0.00478%)
16 Echizen-shi(0.00461%)
17 Kazo-shi(0.00412%)
18 Taitou-ku(0.00373%)
19 Oyama-shi(0.00319%)
20 Hadano-shi(0.00303%)
21 Koube-shi Nishi-ku(0.00242%)
22 Sapporo-shi Nishi-ku(0.0024%)
23 Kawagoe-shi(0.00155%)
24 Suita-shi(0.00155%)
25 Setagaya-ku(0.000814%)
26 Himeji-shi(0.000799%)