In 1791, he moved to the "Château de Bizy", at Vernon in Normandy, where his daughter joined him in April of that year after leaving her husband, the Duke of Orléans ("Philippe Égalité" during the French Revolution). Respected by the people because of his philanthropy, the duke was never bothered by the radicals as the French Revolution progressed. Others of his immediate family, however, were not spared. On 3 September 1792, his daughter-in-law, the princesse de Lamballe, was savagely murdered, and on 21 January 1793, his cousin Louis XVI was executed. He never saw the arrest of his daughter in April 1793, as he died on 4 March 1793 at Bizy. On the night of 6 to 7 March, his body was brought clandestinely to Dreux, where it was buried in the family crypt at the "Collégiale Saint-Étienne". Nine months later, on the afternoon of 21 November 1793 a group of Jacobin radicals and their workmen broke into the chapel, with the excuse of searching for lead and destroying feudal symbols, which had recently been outlawed. They smashed the armorial decorations, uprooted the coffins, and treated the remains of the royally-connected Penthievre family to a common pauper's burial, in a quicklime-coated pit in the nearby canons' cemetery. Similar treatment had recently been given to the remains of the duc's executed cousin King Louis XVI in Paris, and to their ancestors at the royal necropolis of St.Denis. The raid had yielded 1,252 pounds of lead for reuse as ammunition "to fire at the enemies of the Revolution". In 1798 the remains of the chapel were put up for auction, and demolished as recyclable building materials by the successful bidder, a timber merchant from Chartres.