Barahir of the House of Bëor saved Finrod's life at the Dagor Bragollach, and Finrod gave him his ring, which became known as the Ring of Barahir. He also swore an oath of friendship and aid to Barahir and all his kin. When, years later, Barahir's son Beren came to Nargothrond seeking help, Finrod went with him on the Quest of the Silmaril to repay his debt. Celegorm and Curufin, who were living in Nargothrond at the time, persuaded (using barely veiled threats related to their oath) most of Nargothrond to stay behind; only ten warriors, headed by Edrahil, were faithful and came with them. The twelve were captured and taken to Tol-in-Gaurhoth (Isle of Werewolves), formerly Minas Tirith. Finrod and Sauron battled with songs of power but Sauron eventually won. He imprisoned them seeking to learn their errand and identities. Sauron sent a werewolf to devour them one by one until they told their secret. None did. When the wolf came for Beren, Finrod broke his chains and killed the wolf barehanded, fulfilling his oath, but being mortally wounded himself.