Celeborn is a Sindar, one of the Elves of Doriath. There Celeborn and Galadriel met, fell in love and were wedded. Cereborn does not trust or like Dwarves. Celeborn met Thranduil, the King of the Woodland Realm, in Mirkwood. Thranduil retained kingship of the northern part of the forest, while the center part was given to the Beornings and the Woodmen. Celeborn claimed the southern part of the forest below the Narrows of the Forest to be part of Lothlórien. This region was named East Lórien.
Friends
Gandalf the Grey later known as the White Thranduil, King of Lothlorien Eomer, Prince of Rohan Elrond, Lord of Rivendell