The Third Kinslaying was the disastrous attack on the Havens of Sirion by the surviving Sons of Fëanor in the year 538 of the First Age. Since the Sons had sworn an oath to acquire the Silmarils at any cost, they sacked the Havens when they learned that Elwing had one of the Jewels in her possession. Though Elwing managed to escape with the Silmaril, the Havens (last of the holdings of Elves and Men in Beleriand) were utterly destroyed in what was considered to be the "cruelest of the slayings of Elf by Elf, and... the third of the great wrongs achieved by the accursed oath". The Mannish poet Dírhavel was also among those who fell.
- ↑ J.R.R. Tolkien, Christopher Tolkien (ed.), The War of the Jewels, "Part Three. The Wanderings of Húrin and Other Writings not forming part of the Quenta Silmarillion: V. The Tale of Years"
- ↑ J.R.R. Tolkien, Christopher Tolkien (ed.), The Silmarillion, "Quenta Silmarillion: Of the Voyage of Eärendil and the War of Wrath"