The Trev Duvardain (Hi."Tribe of the Cold-earth gift"?) were a Hillman -Tribe in the late third Age.They were sister tribe to the Gallorg and too lived in southwestern Angmar.Both tribes had originally been one single tribe, but other than the Duvardain Brothers, the Gallorg had refused to join the Forces of the Witch-King to re-establish his ancient Witch-realm in Angmar.