It goes without saying that in order to represent a party in court, she has to know about it, right?
Sure, it's not a hard-and-fast rule. After all, members of a certified class aren't universally notified before a suit is filed. But even then, the named plaintiffs (or class representatives) are aware of the lawsuit and have consented to representation. And the class members are given a chance to opt-out.
In one of the oddest cases we've ever heard of, a Utah attorney filed a class action lawsuit, without ever bothering to meet, contact, or obtain the consent of his so-called clients, Amy N. Fowler and Pidge Winburn. The suit, which argued that the ongoing efforts to block gay marriage were resulting in emotional distress, was filed against the State of Utah and The Church of Jesus Christ of Latter-day Saints late last month. The named plaintiffs, one of whom is an attorney, were previously featured in a front-page story on gay marriage and did not know of the lawsuit's existence before being contacted by a reporter, reports the Deseret News.