primarily at the château de Hautefontaine, where Dillon kept an extravagant hunt. Madame de Rothe brought her daughter Thérèse-Lucy de Dillon, a favourite of Marie Antoinette, the French Queen, and her grand-daughter Henriette-Lucy, who would become the memoirist Henriette-Lucy, Marquise de La Tour du Pin Gouvernet. In 1787 and in 1788 he was a member of the Assembly of Notables called together by Louis XVI, and in 1788 presided over the assembly of the clergy. Exile and death Having refused to accept the civil constitution of the clergy, Dillon had to leave Narbonne in 1790. He was replaced by Guillaume Besaucèle, who was the constitutional bishop of Aude. Dillon then emigrated, accompanied by Madame de Rothe, to Coblenz in 1791. Soon afterwards both went to London, where he was visited in 1797 at his home in Thayer Street, Marylebone, by Henriette-Lucy, Marquise de La Tour du Pin Gouvernet. On 15 July 1801, at Paris, Napoleon and Pope Pius VII signed the Concordat of 1801 and most of the French clergy that had gone into exile or hiding returned to take up again their normal duties. Dillon however disobeyed the pope and rejected the Concordat, probably because it suppressed his see at Narbonne, or because he wanted to avoid paying his debts in France. On 7 February 1804, Madame de Rothe, his partner, died in London. He survived her by two years and died on 5 July 1806 in London, and was buried in St Pancras churchyard, which was the burial place favoured by the émigré community, as there was no official Catholic cemetery available.{{Sfn|Fisquet|1867|p=77|ps=. "Mgr Dillon mourut à Londres le 5 juillet 1806 et fut inhumé dans le cimetière de leglise de Saint-Pancras de cette ville, où nous avons vu les débris de sa modeste tombe."}} Final resting place Dillon's grave on Old St. Pancras churchyard seems to have been disturbed in some ways during the cutting of the Midland Railway in 1865, as his name appears on the list of graves of important persons affected by that event on the Burdett-Coutts memorial, erected at that occasion. Between March 2002 and June 2003, part of the St Pancras Old Church graveyard was excavated in preparation for the London terminus of the Channel Tunnel Rail Link. During the archaeological investigation, Dillon's body was found to have been buried wearing a set of porcelain dentures. It is believed that he purchased them