Maîtresse-en-titre

Title used for the chief royal mistress of the King of France

The maîtresse-en-titre was the official royal mistress of the King of France. The title was vaguely defined and used in the Middle Ages but finally became an acknowledged, if informal, position during the reign of Henry IV, and continued through the reign of Louis XV. It was a semi-official position which came with its own apartments, estates and a title if the woman did not have any.

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