Dwarves of Erebor

The Dwarves of Erebor were a group of Dwarves who came from the Lonely Mountain. For a short time they became the Dwarves of the Grey Mountains after Thorin I left Erebor after the death of his father, Thrain I. However, they became the Dwarves of Erebor again after Thrór and his younger brother Grór left. While Thrór and his people became the Dwarves of Erebor, the people led by Grór were the Dwarves of the Iron Hills.

Under the rule of Thrór, the Dwarves of Erebor prospered. However, their kingdom fell when the dragon Smaug forcibly took over.