Cousins by khorazir
"Even as he spoke thus, they heard a cry in the woods, and they stood still as grey stones, listening. But the voice was a fair voice, though filled with grief, and it seemed that it called ever upon a name, as one that searches for another who is lost. And as they waited one came through the trees, and they saw that he was a tall Man, armed, clad in black, with a long sword drawn; and they wondered, for the blade of the sword also was black, but the edges shone bright and cold."
JRR Tolkien: Unfinished Tales: Of Tuor and his coming to Gondolin