Sambrog

Sambrog was the Barrow Wight that was waiting for Frodo in the Barrow Downs. Sambrog had been an agent in the armies of Angmar and had been sent to the Barrows by the Witch King. Devotee to Sauron, his task was to guard the ancient tombs of Arnor so that their treasures could not be plundered by the free peoples of middle earth.

Whilst bending over and looking at Merry, Pippin, and Sam--Frodo awoke and struck the Barrow White unaware with a magical Numenorian shortsword. Cutting Sambrog's hand off, Frodo summoned Tom Bombadil to fully banish the undead away forever.