Gelmir was a Ñoldorin Elf of Nargothrond, son of Guilin and brother of Gwindor. He was captured during the Battle of Sudden Flame and brought to Angband where he was tortured and blinded. He was enslaved there for seventeen years until he was executed. The orcs chopped off his arms and legs and left him to die slowly of his wounds within sight of his of loved ones. Gwindor and his fellow soldiers were so enraged by this act that they charged after them too soon putting Morgoth's forces at an advantage.