Durin's folk

In J. R. R. Tolkien's fictional universe of Middle-earth, Durin's folk, also known as the Longbeards, were the most important clan of Dwarves. Their name comes from that of their first king, Durin I "The Deathless". They were the eldest and greatest of the seven Dwarf-clans.

They originally inhabited the Misty Mountains as a home, until they were driven out by Orcs. Their strongholds in the Misty Mountains included Khazad-dûm (Moria), their first city, and Mount Gundabad. During the Second Age, Durin's folk entered into friendship with the Noldor of Celebrimbor in Eregion. During the War of the Last Alliance, Durin's folk allied with the Elves and the Dúnedain.

In the Third Age, after being driven out of Moria by the Balrog Durin's Bane, most of Durin's Folk fled north and established cities in Erebor and the Ered Mithrin. Both the Ered Mithrin and Erebor were later occupied by Dragons, and they then became a wandering folk in exile. Most of them settled in the Iron Hills, while others under Thráin II wandered west, till they came to the Ered Luin and settled there. Finally, the Dwarven Kingdom of Erebor was restored when Dáin II, Lord of the Iron Hills, became King of Erebor in T.A. 2941 after Smaug's death.