Mistress of the Sun by Sandra Gulland.
About Mistress of the Sun: The story of Louise de la Vallière, mistress of Louis XIV of France.
This book had everything from love and betrayal to grand parties and frightening medical practices. It was an excellent read and I recommend it. Full review: Mistress of the Sun by Sandra GullandThis was book #7 for the 2nd Canadian Book Challenge (which is over).