Arthur Richard Dillon (1721–1806) was archbishop of Narbonne in France. He was the youngest son of Arthur Dillon (1670–1733), who came to France with Mountcashel's Irish Brigade. At the French Revolution he refused the civil constitution of the clergy and fled first to Coblenz and then to London. Birth and origins Arthur Richard was born on 15 September 1721 at the Château de Saint-Germain-en-Laye in France. He was the youngest of the five sons of Arthur Dillon and his wife Christina Sheldon. His father was born in 1670 in Ireland, had fought for the Jacobites in the Williamite War and had gone to France as the colonel of Dillon's Regiment with the Irish Brigade in April 1690 when Irish troops were sent to France in exchange for French troops sent to Ireland with Lauzun. He was a younger son of the 7th Viscount Dillon. His father's family was Old English Irish and descended from Sir Henry Dillon who came to Ireland with Prince John in 1185. Henry's mother was a daughter of Ralph Sheldon, whereas Dominic Sheldon, the English Catholic Jacobite, was her uncle. She was a maid of honour to Queen Mary of Modena, wife of James II. Both parents were thus Jacobites and Catholics. Arthur had four brothers and several sisters, who are listed in his father's article. Career Arthur Richard entered the priesthood and was successively curé of Elan near Mézières, vicar-general of Pontoise (1747), Bishop of Evreux (1753), Archbishop of Toulouse (1758), and Archbishop of Narbonne (1763). In that latter capacity, he also was both the Primate of the ecclesiastical region of Gallia narbonensis and ex officio president of the estates of Languedoc. He devoted himself less to the spiritual direction of his diocese than to the temporal welfare of its inhabitants, carrying out many works of public utility, bridges, canals, roads, harbours, etc.; he had chairs of chemistry and of physics created at the universities of Montpellier and Toulouse, and tried to reduce poverty, especially in Narbonne. From about the age of fifty he lived with his wealthy, widowed niece, Madame de Rothe. She was born Lucy Cary and was the child of his sister Laura, who had married Lucius Cary, 6th Viscount Falkland. Madame de Rothe had been widowed in 1766. Dillon and Madame de Rothe were lovers, an arrangement considered scandalous even by the jaded standards of the day. They maintained a household