A Crown Disowned is the third volume of the cycle of Oak, Yew, Ash, and Rowan that began with To the King a Daughter and was continued in Knight or Knave. The earth is shaking and splitting as the forces from the North draw nearer. The Ice Dragon Riders are speaking to the land, and more fire mountains awaken in the Bog. Rohan seeks to join forces with Tusser, leader of the Bog-folk, as Queen Ysa raises an army to clear the Bog. War draws closer until...