Diane de Poitiers was a prominent French noblewoman born in 1499. She is best known for her long-term relationship with King Henry II of France, who became infatuated with her when he was a young prince. Diane was not only a beautiful woman but also an influential figure at the French court, known for her intelligence and political acumen. As the official mistress of Henry II, Diane played a significant role in the politics of the time. She was involved in various court intrigues and was a patron of the arts, supporting artists and architects. Diane de Poitiers remained a powerful figure until Henry's death in 1559.