Angelique and the King (1966)

"The dazzling mistress of rogues and royalty gambles her beauty for the favor of the most elegant Libertine in all of France - Louis XIV himself."

Soon after her latest husband death, the King himself (Louis XIV) meets with our heroine and begs her to help convince the Persian Ambassador to agree to a treaty. However, what they didn't realize was that the handsome Persian was in fact a sexual sadist. So, it is up to the King's half- brother, some Hungarian prince, to save Angélique from the evil troll's clutches.