'Gimli Son Of Gloin'

Gimli was the son of Glóin, one of the former companions of the hobbit Bilbo Baggins.
He was a remote descendant of Durin the Deathless, chief of the Seven Fathers of the Dwarves and ancestor to the Dwarven people Gimli belonged to, the Longbeards. Gimli was of the royal line, but not close to the succession; he was the third cousin once removed of Dáin II Ironfoot, king of Durin's Folk, and the first cousin once removed of Balin, also one of Bilbo's former companions, and later Lord of Moria.
Gimli was at the Council of Elrond Half-elven—which he attended together with his father to bring news of his home, Erebor. There they learned Bilbo's kinsman Frodo now owned the One Ring, a Ring of Power forged and then lost by the Dark Lord Sauron. The Council decided to have it destroyed by casting it into the volcanic Mount Doom in Sauron's domain of Mordor. Frodo volunteered for the task, and Elrond chose eight people of varying races to aid him in his task—including Gimli. Thus, the Fellowship of the Ring was formed.
Within the Fellowship there was initially friction between Gimli and the Elf Legolas, for various reasons: their races bore an old grudge against each other over the ancient matter of the Necklace of the Dwarves and the destruction of Doriath, and more recently Thranduil, Legolas' father, once imprisoned Gimli's father Glóin (as described in The Hobbit).
Despite this, Gimli and Legolas become friends during their time in Lothlórien, as they find mutual respect for each other.