The Du Pont family is an American family descended from Pierre Samuel du Pont de Nemours (1739–1817). The son of a Paris watchmaker and a member of a Burgundian Huguenot family, and descendant of a minor noble family on his mother's side, he and his sons, Victor Marie du Pont and Eleuthère Irénée du Pont, emigrated to the United States in 1800 and used the resources of their Huguenot heritage to found one of the most prominent of American families, and one of its most successful corporations, E. I. du Pont de Nemours and Company, initially established by Eleuthère Irénée as a gunpowder manufacturer. Various members of the family managed the company well into the twentieth century and to this day family trusts constitute a substantial portion of the company's ownership. This and other companies run by the du Pont family employ some five to ten percent of Delaware's population. The family also played a very large part in politics during the eighteenth and nineteenth centuries and assisted in negotiations for the Louisiana purchase. During the 19th century, the Du Pont family maintained their family wealth by carefully arranged marriages between cousins[1] which, at the time, was the norm for many families.