Third Kinslaying

The Third Kinslaying was the name for one such slaying of Elf by Elf: For a list of other occurrences, see Kinslaying (disambiguation).

The Third Kinslaying was the third, the last, and the cruelest of the slayings of Elf by Elf by the Sons of Fëanor.

Prelude
When Maedhros and Maglor, the last of the Sons of Fëanor heard that Elwing had the Silmaril and was keeping it at the Havens of Sirion, they prepared what was left of their followers and prepared to attack the haven and take the Silmaril by force.

The Battle
What little resistance was useless, the Havens were completely destroyed and inhabitants were killed save for Elwing who was able to escape with the help of Ulmo and out to her husband Eärendil who was out at sea on his ship, the Vingilotë, and their two sons, Elros and Elrond whom Maglor adopted.

Consequences
It was stated by Eönwë herald of Manwë that because of these evil deeds the remaining Sons of Fëanor had lost all right to the Silmarils.