Forms of address for multiple older brothers


In Japanese, I know you refer to your older sister as お姉さん and older brother
as お兄さん. Something along those lines!

But I have 2 older brothers, and I want to change their contact names to
Japanese, like "Joshua" to "お兄さん".

Both my brothers are similar in age, so to avoid confusion what would I change
both of their contact names to? If I were to change them both to お兄さん, it
would be hard for me to distinguish them. So what should I put?




Since there is no real universal rule regarding how to distinguish two big
brothers or sisters in form of address, each family might have their own way,
but one common pattern is [nickname] + 兄【にい】/姉【ねえ】. The [nickname] is often
their given name shortened into two morae long. The suffix also could be 兄
**さん** , 姉 **ちゃん** etc.

Calling senior siblings お姉さん or お兄さん originally comes from the traditional
concept that you should not refer to a senior person by their true name, so
nowadays some families don't really care about it and just call each other
[(nick)name] + くん/ちゃん.

