Louise de Kérouaille was a French noblewoman born in 1649. She became known for her beauty and charm, which caught the attention of King Charles II of England. Louise was sent to England as a spy for the French government but soon became one of the king's mistresses, influencing his policies and decisions. Louise's relationship with Charles II led to her receiving the title of Duchess of Portsmouth. She played a significant role in the political landscape of the time, particularly in fostering Anglo-French relations. Louise de Kérouaille passed away in 1734, leaving a lasting legacy in both France and England.