The Quest for Excalibur

Twelve years ago, 21st-century librarian Gwen decided to remain in the Dark Ages with the man she loves above all else - a man around whom endless well-known tales of legend and magic have been spun. King Arthur. Over the years, she's carved a life for herself by her husband's side, gently steering him in the direction she wants him to go, but always with an awareness that he's a Dark Age king with a Dark Age view of the world.
Equipped with her prior knowledge of Arthurian legend, Gwen's sole aim has long been to save her husband from the legendary fate she dreads hangs over him. But always, at the back of her mind, is the nagging doubt that whatever she does is already set in stone, and nothing she can do will change his future which is already her past.
Danger lurks in the most unexpected places, and long-hidden secrets threaten to rise to the surface. After a long, cold winter in their hilltop fortress, Gwen's pleased to welcome traveling players to Din Cadan. But these players are hiding secrets of their own, and one of them has come with black deeds in mind. Gwen will have to fight harder than she's ever done to save herself and thus her husband. And all evidence points to the hand of Morgana, Arthur's wicked sister, manipulating everything from afar.
Throughout all of this, simmering in the background, is young Medraut, Arthur's nephew. Unnoticed, despite still being only a boy, he's been exerting his malignant influence over those around him, in particular, Gwen and Arthur's son and heir.

But even Morgana can't prevent Gwen discovering the truth behind the story of Excalibur and setting the legendary sword in her husband's hands.
¿Guinevere
The Dragon Ring
The Bear's Heart
The Sword
Warrior Queen
The Quest for Excalibur
The Road to Avalon