Du Pont initially supported the
French Revolution and served as president of the
National Constituent Assembly. He and his son Eleuthère were among those who physically defended
Louis XVI and
Marie Antoinette from a mob besieging the
Tuileries Palace in Paris during
the insurrection of 10 August 1792. Condemned to the
guillotine during the
Reign of Terror, du Pont was awaiting execution when
Maximilien Robespierre fell on
9 thermidor an IV (27 July 1794), and he was spared. He married Françoise Robin on
5 vendémiaire an IV (27 September 1795). Robin was the daughter of Antoine Robin de Livet, a French aristocrat who lived in Lyon, and the widow of
Pierre Poivre, the noted French administrator. After du Pont's house was sacked by a mob during the events of
18 Fructidor V (4 September 1797), he, his sons and their families immigrated to the United States in 1799. They hoped (but failed) to found a model community of French exiles. In the United States, du Pont developed strong ties with industry and government, in particular with
Thomas Jefferson, with whom he had been acquainted since at least 1787 and who had referred to him as "one of the very great men of the age" and "the ablest man in France." Du Pont engaged in informal diplomacy between the United States and France during the reign of
Napoleon. He was the originator of an idea that eventually became the
Louisiana Purchase, as a way to avoid French troops landing in
New Orleans, and possibly sparking armed conflict with U.S. forces. Eventually, he settled in the U.S. permanently; he died there in 1817. His son Éleuthère, who had studied chemistry in France with
Antoine Lavoisier, founded a
gunpowder manufacturing plant, based on his experience in France as a chemist. It became one of the largest and most successful American corporations, known today as
DuPont. In 1800, he was elected a member of the
American Philosophical Society in
Philadelphia, Pennsylvania. ==See also==