Joseph Augustin de Mailly, marquis d'Haucourt

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Joseph Augustin de Mailly

Also Known As: "Augustin-Joseph de Mailly"
Birthdate: (85)
Death: March 25, 1794 (85)
Arras, Pas-de-Calais, Nord-Pas-de-Calais, France
Immediate Family:

Son of Joseph de Mailly and Louise Madeleine Josèphe de La Rivière
Husband of Constance Colbert de Torcy; Marie Michelle de Séricourt and Marie Blanche Charlotte de Narbonne-Pelet
Father of Anne Marie Constance de Mailly; Louis Marie de Mailly Haucourt and Adrien de Mailly, marquis d'Haucourt

Managed by: George J. Homs
Last Updated:

About Joseph Augustin de Mailly, marquis d'Haucourt

Augustin-Joseph de Mailly (5 April 1708, Villaines-sous-Lucé – 25 March 1794, Arras) was a French general, governor and nobleman.

Augustin-Joseph de Mailly was marquis d'Haucourt and baron of Saint-Amand. In January 1744 he inherited the title of count of Mailly following the death of his cousin Louis de Mailly (1723–1743). At first a musketeer (1726), he served in the gendarmerie (1733–1764) before rising rapidly through the ranks – brigadier on 20 February 1743, maréchal de camp on 1 May 1745, lieutenant-général on 10 May 1748, inspector general of cavalry and dragoons on 21 May 1749, and finally director-general of camps and armies. In disgrace, he was distanced from the court and therefore remained a lieutenant-Général for a very long time, before becoming commander in chief in Roussillon, where he was the originator of great building works and the renewal of the university and played a large rôle in Catalan Freemasonry. Made a chevalier du Saint-Esprit on 26 May 1776, he was made marshal of France on 13 June 1783 and due to his age was able to be governor of Abbeville, sénéchal and Grand bailli of Ponthieu not far from his lands and château. However, this Mailly, who fought in many battles of the wars of Louis XV, received from Louis XVI, in 1790, command of one of the four armies decreed by the National Assembly (14th and 15th military divisions). This was a difficult task and he resigned on 22 June, when he learned of the king's flight to Varennes. On 10 August 1792, despite his old age, he fought on the side of the threatened French monarchy. Escaping the carnage that followed the capture of the palais des Tuileries and the September massacres, he was arrested in his château, then guillotined in 1794 at Arras, aged 87 – on the scaffold he cried "I remain faithful to my king, as my ancestors have always been".


Histoire de la campagne de l’année 1734 en Allemagne, commandée par le maréchal de Berwick, et après sa mort par le maréchal d'Asfeld. Ecrite par les officiers de l'état-major avec des Notes des différent partis qui la divisoient, et conservée dans les portefeuilles du comte de Mailly, mestre de camp de cavalerie dans cette année et depuis maréchal de France.

Lettre de M. le maréchal de Mailly au roi, sur l'administration intérieure qu'il a remplie en Roussillon, 1790, Notice n° : FRBNF36385059

Souvenirs du maréchal de Mailly, Le Mans, impr. de Leguicheux, 1895. Gr. in-8 ̊ (255 x 165), 111 p. Acq. 293637 –VIIIe, Notice n° : FRBNF32409343

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Joseph Augustin de Mailly, marquis d'Haucourt's Timeline

April 5, 1708
Age 25
February 19, 1792
Age 83
Paris, Paris, Île-de-France, France
March 25, 1794
Age 85
Arras, Pas-de-Calais, Nord-Pas-de-Calais, France