The Petty Dwarves: History (p3)

By the time of the War of the Jewels, after the Return of the Ñoldor, the Petty-dwarves had nearly died out. By the fifth Century of the First Age, the last remnant of their people were Mîm and his two sons, who lived at Amon Rûdh. Túrin and his men shot at the Petty-dwarves, mistaking them for animals or Orcs. Mîm survived, but an arrow had killed one of his sons, Khîm. Mîm's other son had been killed by Orcs, leaving Mîm the last of his kind. Mîm was killed by Húrin after the latter's release from Angband, and the Petty-dwarves were no more.