Anne of Geierstein — Sir Walter Scott

In this fictional tale set after the battle of Tewkesbury in 1471, Scott examines King Edward IV's defeat of the Lancastrian party. The Earl of Oxford and his son embark on a secret mission to convert Charles the Bold to the Lancastrian cause. Joined by Swiss Countess Anne, a magician of sorts, they dodge certain death and face a revolution along the way.