Melian

In Valinor, Melian dwelt in the gardens of Lórien, but she journeyed often to Middle-earth. There, in the woods of Nan Elmoth, she came upon Elwë Singollo (Elu Thingol) as he marched into the West with the people of the Teleri. Many of his people remained in Beleriand searching for their lord (these were to become the Sindar), but through the enchantment of Melian, he remained hidden from them.

At last, Melian and Thingol came forth from Nan Elmoth and founded the kingdom of Doriath, which Melian protected from the hosts of Morgoth through her powers. She encircled the land in the Girdle of Melian, which none could pass without her wishing it.

Melian and Thingol ruled in Doriath for many centuries, but when at last Thingol was slain by treacherous Dwarves, Melian departed from the halls of Menegroth and returned across the Great Sea to Valinor.