Very few women in history have betrayed their sisters to become the king's mistress. Maybe that's why Marie Anne de Mailly, arguably history's worst sister, is so intriguing.
Marie Anne de Mailly: The Manipulative Mistress
Hortense Mancini: The Duchess Who Ran Away
Hortense Mancini was quite an interesting lady. She had a husband who knocked out female servants’ front teeth, she ran away from him, and became a royal mistress.
The Royal Women 