The Rings of Power were forged by the Elven-smiths (also known as the Gwaith-i-Mírdain) of the Noldorin settlement of Eregion. They were led by Celebrimbor, the grandson of Fëanor, the greatest craftsman of the Noldor, working in collaboration with Dwarves from Khazad-dûm (Moria), such as his friend Narvi. Humiliated by the fall of his master Morgoth at the end of the First Age, the Dark Lord Sauron had evaded the summons in Valinor to surrender and face judgment, opting instead to remain in Middle-earth and seek dominion over the people of the Earth, primarily the Elves, for he knew that the Firstborn of the Children of Ilúvatar had the greater power. In the year 1200 of the Second Age, he arrived under the guise of a fair-looking emissary of the Valar named Annatar, the Lord of Gifts, offering the knowledge to transform Middle-earth with the light of Valinor. He was shunned by the Elven leaders Gil-galad and Elrond in Lindon, but was successful in persuading the Noldor of Eregion, who desired to increase the skill and subtlety of their works while enjoying the bliss of those that had departed. With Sauron's help, they set their sights on forging magic rings, creating the Seven and the Nine. While Celebrimbor created a set of Three alone, Sauron left for Mordor in the year 1500 and forged the One Ring, a master ring to control all the others, in the fires of Mount Doom.