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Engraving depicting Diane de Poitiers (1499-1566), French noblewoman and a courtier at the courts of Kings Francis I and his son, Henry II of France, France, circa 1545. De Poitiers was also the mistress of King Henry II of France. Engraving by J. Rogers after J. Champagne. (Photo by Kean Collection/Getty Images)

Engraving depicting Diane de Poitiers (1499-1566), French noblewoman and a courtier at the courts of Kings Francis I and his son, Henry II of France, France, circa 1545. De Poitiers was also the mistress of King Henry II of France. Engraving by J. Rogers after J. Champagne. (Photo by Kean Collection/Getty Images)