Overview
Marie Christine de Pardaillan de Gondrin (17 November 1663 – 1675) was the eldest legitimate child of Françoise de Rochechouart de Mortemart and her husband, the Marquis of Montespan. She died in her teens and never married.
Biography
Marie Christine was born in Paris to Louis Henri de Pardaillan de Gondrin, marquis de Montespan and his wife of nine months Françoise de Rochechouart de Mortemart. She was the older of two children born to the couple and had numerous half brothers and sisters as a result of her mother's affair with Louis XIV of France.
When her father found out about the affair between the King and her mother, Montespan decided to take his children away to his country estate before raising a scandal at court, challenging the king one day at Saint-Germain-en-Laye and decorated his carriage with antlers (like horns, these were traditional symbols of the cuckolded husband).
From Wikipedia (CC BY-SA 4.0).