 In 2941 Thorin II Oakenshield, son of Thráin II and grandson of Thrór, recolonized the Lonely Mountain after Smaug the dragon was slain by Bard, the future King of Dale.After the ensuing Battle of Five Armies, in which the Eagles, the Elves of Mirkwood, the Men of Dale, and the Dwarves of the Iron Hills (as well as Thorin's band) defeated an invading horde of Goblins and in which Thorin was killed, his cousin Dáin II Ironfoot, already Lord of the Iron Hills, became King Under the Mountain, and the Lonely Mountain was not abandoned again.Late in the Third Age, when war and terror grew in Rhûn, considerable numbers of its Dwarves left their ancient homelands.