Fingon the Valiant was the eldest son of Fingolfin. He's a wonderful character and probably my favorite part of his story is during the rescue of Maedhros when he starts singing and is answered by Maedhros.
The Last Alliance. Elrond lost his parents, friends like Maglor and Gil-Galad. He also lost his only daughter and brother to a mortal death. Few realize that until after the Dagor Dagorath, elves and men share different afterlives.