Golden Circle (Endhaven Supplement)
From D&D Wiki
The Magi of Glittering Vale fought a war against the Shadow Lance. Many of their best died early in that conflict. Desperate, they turned to the Mother of Storms for help. She told them to form an alliance with the other races. They did so, and they called this alliance the Golden Circle.
This alliance successfully defeated the Shadow Lance, ending the Crusade of Light on the side of good. With coffers empty, their unpaid mercenaries rebelled, and so they lost the empire that they strived to save.
The arms and armor of these days still appear and are valued by those who fight for good.