"The king's daughter escaped with it south. They set up a refugee camp at the mouth of a river. By then most of the continent had fallen, there were people there from all over. For twenty years they were left alone. I don't know if no one knew where the Silmaril was, or if they were finding ways to delay. They must have learned of it eventually. She wore it on a necklace. People believed it'd bring them safety and healing, that it'd ward off monsters, that it'd keep trouble away. Círdan asked them to let him destroy it -- destroying it still makes you a target, the way the oath was worded, but at least there'd have been no point bothering anyone else -- but it was important to them -- it may have actually had healing properties even though no one knew how to use it, I'm not sure, I could hardly have shown up and asked --
Eventually messengers arrived, demanding it. They were refused.
About a year after that, they came. During this fight some of the host that had followed my father and uncles defected. That only made everything bloodier, though it's -- reassuring that they tried. Until then I'd wonder if some magic kept them bound to my uncles' side. I don't think there was any magic, it's just that it takes longer than it should to burn down thousands of years of loyalty. And they still thought they could win, if they could only get the Silmaril.
I think that fight was almost entirely fought among the host of the sons of Fëanor, but tens of thousands of civilians died anyway. I don't know why they didn't defect sooner. Maybe they thought they were assailing another kingdom, maybe they didn't realize until they reached Sirion that it was just a bunch of families in tents and little wooden shelters.
The princess leapt into the sea with the Silmaril around her neck. One of the Valar turned her into a bird."