The parents of Sildo refused the pardon of the Valar and remained in Middle-Earth, where he was born at the end of the First Age. During his time there, he found his wife, Dathel. He was one of the greatest warriors in Middle-Earth fighting in the Last Alliance of Men and Elves, Battle of Dagorlad, and finally in the Siege of Barad-dûr. Having a family with his wife and two daughters, Tornith and Galadel, he led a happy life.