Celeborn:

Celeborn was the Lord of Lothlórien,and the Lady Galadriel's husband. He had lived in Middle-Earth from at least the First Age, though he too came from Valinor, to some time after the Keepers of the Rings sailed into the West. After that it is not known what happened to him other than the fact that he ruled in East Lórien for a while then went to Rivendell. It is not known if he eventually sailed into the West.

Celebrían:

Celebrían was the daughter of Celeborn and Galadriel. She married Elrond,and bore him twin sons, Elladan and Elrohir, as well as one daughter, Arwen. After being captured by Orcs in the Misty Mountains, Celebrían chose to sail into the West.

Círdan:

Círdan was lord of the Grey Havens from their founding in the early Second Age of the Sun until some time in the Fourth Age, when he took the last ship into the West. He was the original keeper of Narya, the Ring of Fire until the coming of Gandalf in the Third Age.

Celebrimbor:

One of the Noldorin Elves, and lord of the Elven realm of Hollin, also known as Eregion, on the western side of the Misty Mountains, Celebrimbor was the grandson of Fëanor. He drew the symbols on the western gate of Khazad Dum. Fooled by Sauron in the guise of Annatar, he helped to forge the Rings of Power, both greater and lesser. On his own, Celebrimbor created the Three, the Elven Rings. He was killed by Sauron when Eregion was overrun by the Dark Lord's armies, after discovering the forging of the Ruling Ring when Sauron placed it upon his finger. However, he was able to hide the Three from him long enough to pass them to their guardians.

Celegorm:

Celegorm was one of the seven sons of Fëanor and Nerdanel. He was killed in Mengroth, during an attempt to regain one of the Silmarils, by Dior.

Curufin:

The fifth son of Fëanor and Nerdanel, Curufin was also slain by Dior in Mengroth. He was also a very skilled horseman. At one time, he owned the knife Angrist, forged by Telchar.

Caranthir:

Caranthir was the fourth son of Fëanor and his wife Nerdanel. He was slain in Doriath, along with Curufin and Celegorm, by Dior during a failed attempt to regain the Silmaril.

The Lord of the Rings
The Silmarillion
The Hobbit
The Complete Guide to Middle Earth by Robert Foster