Lammot du Pont II was an American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 businessman who was the head of the du Pont family's

Du Pont family

The Du Pont family is an American family descended from Pierre Samuel du Pont de Nemours . The son of a Paris watchmaker and a member of a Burgundian noble family, 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...

  E. I. du Pont de Nemours and Company for 22 years.

Born in Wilmington, Delaware

Wilmington, Delaware

Wilmington is the largest city in the state of Delaware, United States, and is located at the confluence of the Christina River and Brandywine Creek, near where the Christina flows into the Delaware River. It is the county seat of New Castle County and one of the major cities in the Delaware Valley...

, he was the ninth of the eleven children of Lammot du Pont, Sr.

Lammot du Pont

Lammot du Pont I was a key member of the Du Pont family in the mid-nineteenth century. His father was Alfred V. du Pont, the eldest son and successor of Eleuthère Irénée du Pont, the founder of DuPont. He obtained a chemistry degree from the University of Pennsylvania and entered into the family...

 and his wife, Mary Belin. Married four times, Lammot du Pont, Jr.'s first wife was Natalie Driver, widow of Rodgers Wilson. His son, David F. du Pont,
by his fourth wife, died at age twenty-one as a result of an automobile accident at Fishers Island, New York

Fishers Island

Fishers Island, approximately 9 miles long and 1 mile wide, is located at the eastern end of Long Island Sound, 2 miles off the southeastern coast of Connecticut across Fishers Island Sound...

.

On March 15, 1926, Lammot du Pont was elected President of E.I. du Pont de Nemours Co., succeeding Irénée du Pont

Irénée du Pont

Irénée du Pont was a U.S. businessman, former president of the DuPont company and head of the Du Pont trust.-Biography:A descendant of Eleuthère Irénée du Pont, he graduated from Andover in 1894 and MIT in 1897, then worked for Fenn’s Manufacturing Contracting Company for a number of years before...

, who was elected Chairman of the Board of Directors

Board of directors

A board of directors is a body of elected or appointed members who jointly oversee the activities of a company or organization. Other names include board of governors, board of managers, board of regents, board of trustees, and board of visitors...

. http://select.nytimes.com/gst/abstract.html?res=F70D17F7385D13738DDDAF0994DB405B868EF1D3 Lammot du Pont remained President until May 20, 1940 when he was succeeded by Walter S. Carpenter, Jr.

Walter S. Carpenter, Jr.

Walter Samuel Carpenter, Jr. was an American corporate executive from Wilmington, Delaware who oversaw the DuPont company's involvement in the Manhattan Project to produce an atomic bomb for use during World War II...

 At the same time, Lammot replaced his brother Pierre S. du Pont

Pierre S. du Pont

Pierre Samuel du Pont was president of the E. I. du Pont de Nemours and Company from 1915 to 1919, and served on its Board of Directors until 1940...

as Chairman of the Board. http://select.nytimes.com/gst/abstract.html?res=F30914FE3554117A93C3AB178ED85F448485F9