Éleuthère Irénée (E.I.) du Pont

Industrialist, chemist, founder of E. I. du Pont de Nemours, his gunpowder supplied the Union Army in American Civil War and the US military in the world wars
1771-1834 (63)
britannica.com

Irénée du Pont

Businessman, president of the DuPont Chemical Company, industrialist, head of the DuPont family trust
1876-1963 (87)

Jessie Ball duPont

teacher, philanthropist aka the Great Floridian, founder of Nemours Children's Health d/b/a The Nemours Foundation in 1936
1884-1970 (86)
dupontfund.org