D'Abancourt was born in Douai, and was the nephew of Charles Alexandre de Calonne. He was Louis XVI's last minister of war (July 1792), and organised the defence of the Tuileries Palace during the 10th of August attack. Ordered by the Legislative Assembly to send away the Swiss Guards, he refused, and was arrested for treason to the nation and sent to Orléans to be tried.
At the end of August the Assembly ordered Abancourt and the other prisoners at Orléans to be transferred to Paris with an escort commanded by Claude Fournier l'Americain. At Versailles, they learned of the September Massacres in Paris. Abancourt and his fellow-prisoners were murdered in cold blood in massacres on 9 September 1792 at Versailles, and Fournier was unjustly charged with complicity in the crime.
- "G.H.C. Numéro 61 : Juin 1994 Page 1081". Généalogie et Histoire de la Caraïbe. Retrieved 13 August 2006.
- Chambers Biographical Dictionary, ISBN 0-550-18022-2, page 1
- Chisholm 1911.
- Weiss, Charles. (1841) Biographie universelle, ou Dictionnaire historique contenant la nécrologie des hommes célèbres de tous les pays... Tome Premier, Furne.
- This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). "Abancourt, Charles Xavier Joseph de Franqueville D'". Encyclopædia Britannica. 1 (11th ed.). Cambridge University Press. p. 6.
Pierre August Lajard
| Secretary of State for War
23 July 1792 – 10 August 1792
Joseph Marie Servan de Gerbey