To the King a Daughter begins the cycle of Oak, Yew, Ash, and the four powers of the world who have been warring for centuries. The Clan of Ash is slowly dying, their totem tree in the sacred square withering away to nothing. There is a prophecy that a daughter of Ash will rise again, but none have survived the mass killings, thereby rendering the prophecy unfillable. But deep in the swamps, in the care of the witch-healer all need and all fear, there is a young girl-woman who can not be the witch's daughter; a girl who, in fact, by virtue of her beauty and elegance and simmering power, can only be a Daughter of Ash, the one who will rise to fulfill the prophecy—and the destiny of her birthright.

Times are changing in Rendelsham. The old King is dead, and the foolish Prince Florian has assumed the throne. Florian's mother, Queen Ysa of the House of Oak, still controls the land from behind the scences, but her job grows more difficult every day. Her unworthy, headstrong son is harder to control than her husband was, and she must spend more time than ever masking her own movements. Her husband's illegitimate daughter Ashen, heir to the nearly dead House of Ash, still causes trouble by her very existence, and must never be given an opening to the throne. The barbarian Sea-Rover clan presents problems from the edge of the Bog, Ysa's newest magical ally has been exposed as a traitor, and nothing is going as Ysa had planned. And still the unknown yet encroaching threat from the North continues to grow. Through births and deaths, marriages and duels, love and betrayal, magic and force, the four Houses of Rendelsham can only survive by the strength of their unity—but is unity possible in such a court of intrigue as this one?

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 continued in Knight or Knave. The earth shakes and splits 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 even the Queen cannot deny it any longer. Raids from the north increase, and, for the first time, the Riders of the Ice Dragons appear. It is time for the Queen to give up her game of pitting one faction against another. Four great armies are assembled to march under the same banner. Though they do not represent the Four Trees, they nevertheless see this as a good omen. Many good men from all four armies fall in battle, yet the Great Foulness is still at large. Is the combined might of the four powers enough to free the land from evil?

Over a year has passed since the defeat of the Great Foulness, and the ravaged earth has begun to heal. Lost for generations, the signet rings of the Four Great Houses—-Oak, Yew, Ash, and Rowan—-have been restored to their rightful heirs. And Ashen NordornQueen, mistress of the Land of Ever Snow, looks forward to a life of peace and happiness with her beloved husband and their newborn son—-only to learn that an ancient evil still threatens all that she holds dear. The Mother Ice Dragon, the fearsome progenitor of her deadly breed, has awakened from slumber to menace the world anew. Legend holds that only the Dragon Blade, forged from the scales of her vanquished mate, can slay the deadly female dragon, but the Dragon Blade has been lost for ages. As Ashen embarks on a perilous quest to find the mystic sword, she leaves her castle and homeland in the care of her closest friends, including Rannore, Lady of the Rowan, who soon faces danger of a different sort.... Dragon Blade continues the saga begun in To the King a Daughter and continued in Knight or Knave and A Crown Disowned.

Having rebuilt the NordornLand from rubble, Ashen and Gaurin rule justly and fairly over a reinvigorated land. Beloved by their kingdom, they now turn their attention to the next generation of Nordorn royalty. Responsible Bjaudin, heir to the throne, focuses on his studies and Hegrin, Queen of Rendel, rears her own growing brood. But the youngest siblings, Elin and Mikkel, seem destined to alter the future of the NordornLand—for better or for worse. Thirteen-year-old Elin craves power, and believes her new alliance with the evil Ysa may help her achieve it. Eleven-year-old Mikkel stows away on a Sea-Rover ship, hoping for a brief adventure. But when the ship is attacked, Mikkel is taken prisoner, and soon his bonds to the NordornLand are the last thing on his mind. Through births and deaths, celebration and wars, Ashen and Gaurin have worked tirelessly to bring peace and prosperity to their kingdom. But it appears that this era of peace may be at its end. This final installment of the Cycle of Oak, Yew, Ash, and Rowan brings the series to a thrilling climax worthy of these fascinating characters.