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The former Barony then Marquisate, was elevated to a duchy by Louis XIV (former lover of Mme de Montespan) in 1711 for Louis Antoine de Pardaillan de Gondrin and was passed down his family till its extinction in 1757 at the death of Louis Antoine's great grandson Louis de Pardaillan de Gondrin (1727–1757) who died in Breme during the Seven Years' War.
He was promptly imprisoned in the For-l'Évêque, then exiled to his lands - taking young Marie Chrsitine and the even younger Louis Antoine.