§ Of Túrin Turambar The Silmarillion

At first his own people did not know Gwindor, who went out young and strong, and returned now seeming as one of the aged among mortal Men, because of his torments and his labours; but Finduilas daughter of Orodreth the King knew him and welcomed him, for she had loved him before the Nirnaeth, and so greatly did Gwindor love her beauty that he named her Faelivrin, which is the gleam of the sun on the pools of Ivrin. For Gwindor's sake Túrin was admitted with him into Nargothrond, and he dwelt there in honour. But when Gwindor would tell his name, Túrin checked him, saying: 'I am Agarwaen the son of Úmarth (which is the Bloodstained, son of Ill-fate), a hunter in the woods'; and the Elves of Nargothrond questioned him no more.