Etymology and distribution of 二家.

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
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Ratio of 二家.

カンマ区切りで複数の名字を指定できます。

Etymology of 二家

Distribution of 二家
Ranking
1 Aomori-ken(0.000524%)
2 Kyouto-fu(0.000499%)
3 Nara-ken(0.000297%)
4 Oosaka-fu(0.00023%)
5 Tochigi-ken(0.000222%)
6 Toukyou-to(Very rare)
7 Fukuoka-ken(Very rare)
8 Chiba-ken(Very rare)
9 Hokkaidou(Very rare)
10 Kanagawa-ken(Very rare)