Duinhir is the Lord of the Blackroot Vale. He and his sons Duilin and Derufin came to Minas Tirith when the beacons were lit, providing aid to the Steward, while his wife Rosfin stayed behind at Morlad.
-  Defence of Minas Tirith
-  Hammer of the Underworld
-  Instance: The Darkest Hour
-  Book 6, Chapter 9: The City Stands
-  The Faint-hearted - Vector to Cair Andros
-  Cair Andros: Cruel Molvagúr - (Duinhir)
-  Cair Andros: The Captives - (Duinhir)
-  Cair Andros: The Island Walls - (Duinhir)
-  Cair Andros: The Stronghold - (Duinhir)
-  The Retaking of Cair Andros - (Duinhir)
- "I am the Lord of the Blackroot Vale, and within those boundaries my command is the law. Outside of them, I am given authority over others by the grant of the Council and the Steward. But in affairs of my own house, and over the actions of my sons, I have complete authority no matter where I am!"