Originally Posted by
Pat+
A United Club membership gives you reciprocal access to the Star Alliance network lounges, so yes -- you should be able to get in.
However, the guest rules don't apply. The "members of the immediate family" rule is specific to United. It's a bit of a grey area but I'm afraid you can't bring any guests at all. Business class would entitle you to 1 guest and Star Gold to two. ....
*G only get 1 guest @ *A lounges and you are correct family access is only for UC members @ UCs.
Star Alliance Lounge Access Policy