Etymology and distribution of 久良.

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!

「久良」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 久良

Distribution of 久良
Ranking
1 Taketa-shi(0.0776%)
2 Kitauwa-gun Kihoku-chou(0.0431%)
3 Sakaiminato-shi(0.0283%)
4 Inabe-gun Touin-chou(0.0162%)
5 Rittou-shi(0.00905%)
6 Koushi-shi(0.0089%)
7 Fukutsu-shi(0.00799%)
8 Amakusa-shi(0.00657%)
9 Ena-shi(0.00629%)
10 Fukuyama-shi(0.00628%)
11 Kasaoka-shi(0.00581%)
12 Kokubunji-shi(0.00546%)
13 Kure-shi(0.00527%)
14 Asaka-shi(0.00515%)
15 Higashihiroshima-shi(0.00499%)
16 Koube-shi Chuuou-ku(0.00487%)
17 Yokohama-shi Tsudzuki-ku(0.00441%)
18 Koube-shi Hyougo-ku(0.00427%)
19 Tama-shi(0.00394%)
20 Hiroshima-shi Minami-ku(0.00369%)
21 Fukuoka-shi Nishi-ku(0.00357%)
22 Uwajima-shi(0.00354%)
23 Matsubara-shi(0.00346%)
24 Mihara-shi(0.0033%)
25 Hiroshima-shi Asakita-ku(0.00287%)
26 Koube-shi Suma-ku(0.00273%)
27 Takatsuki-shi(0.00264%)
28 Hiroshima-shi Asaminami-ku(0.00253%)
29 Okayama-shi(0.00207%)
30 Kumamoto-shi(0.00136%)
31 Ichikawa-shi(0.00132%)
32 Itabashi-ku(0.00132%)
33 Ooita-shi(0.00103%)
34 Matsuyama-shi(0.000869%)
35 Sakai-shi(0.000572%)