Jean Guillaume Hyde de Neuville (1776–1857), later made a baron, was a French royalist and diplomat. He lived in exile in the United States, 1807–14, but kept informed of European events through his extensive contacts with other Bourbon sympathizers. After returning to France, Hyde de Neuville became a member of the Chamber of Deputies in 1815 and served as ambassador to the United States, 1816–22, and to Portugal, 1823–24. He visited Monticello late in 1818. Hyde de Neuville was again elected to the Chamber of Deputies in 1823. He was named Count of Bemposta in 1824 for his role in stopping a coup d’état in Portugal. Four years later Hyde de Neuville became minister of the French navy, retiring after the fall of the Bourbon monarchy in 1830 (DBF description begins Dictionnaire de biographie française, 1933– , 19 vols. description ends ; Françoise Watel, Jean-Guillaume Hyde de Neuville (1776–1857) Conspirateur et Diplomate [1997]; Hyde de Neuville to TJ, 22 Dec. 1807 [DLC], 3 Dec. 1818; TJ to James Madison, 31 Oct. 1812).

Hyde de Neuville’s letter to TJ of nov. 22, not found, is recorded in SJL as received from New Brunswick on 22 Dec. 1811. TJ enclosed it to James Madison on 31 Dec. 1811. Hyde de Neuville was seeking an appointment to the United States Military Academy at West Point for Charles Despinville, the son of his friend and relation Charles, comte d’Espinville. The younger Despinville became a West Point cadet in July 1813, and he later rose from third to first lieutenant as an artillery officer in the United States Army, serving from 1817 to 1830 (Hyde de Neuville to TJ, 19 Oct. 1812; Heitman, U.S. Army description begins Francis B. Heitman, comp., Historical Register and Dictionary of the United States Army, 1903, 2 vols. description ends , 1:369; JEP description begins Journal of the Executive Proceedings of the Senate of the United States description ends , 3:103, 105, 108, 4:91 [18, 19 Dec. 1817, 14 Apr. 1830] ).