He was born on October 12, 1880, in Wilmington, Delaware. He was the ninth, and youngest boy, of eleven children born to chemist Lammot du Pont (1831–1884),[2] and his wife, Mary (née Belin) du Pont (1839–1913).[3] Among his siblings were brothers Pierre S. du Pont and Irénée du Pont, who were both involved in the Du Pont Company.[3] His father died during a nitroglycerin explosion in 1884.[2]
[edit]Du Pont at a U.S. Congressional committee hearing in 1938
On March 15, 1926, Lammot du Pont was elected President of E.I. du Pont de Nemours Co., succeeding elder brother Irénée du Pont, who was elected Chairman of the Board of Directors.[6]
Lammot ws president until May 20, 1940, when he was succeeded by Walter S. Carpenter Jr. At the same time, Lammot replaced another brother, Pierre S. du Pont, as chairman of the board.[7]
Du Pont was married four times. His first marriage was on January 27, 1903, to Natalie Driver Wilson (1877–1918),[8] at St. John's P. E. Church and officiated by Bishop Coleman.[9] Natalie was a sister of Rodgers Wilson. Together, Lammot and Natalie were the parents of:
Natalie Wilson du Pont (1904-1975), who married George P. Edmonds. They had two children, George, Jr. and Andrew.[10]
Mary Belin du Pont
Esther Driver du Pont (1908–1984), who married Campbell Weir (1901–1982) in 1928.[11] They divorced and she remarried to Sir John Rupert Hunt Thouron (1907–2007) in 1953.[12]
Lammot du Pont III (1909–1964), who married Mary Elizabeth Wooten (1916–1996) in 1950.[13]
Pierre Samuel du Pont III
Edith du Pont
Alexandrine du Pont (1915–1953), who married Howard A. Perkins (1906–1947) in 1937.
Reynolds du Pont, a Republican state senator and president pro tem in Delaware who married Katherine Lewars.[14]
His second marriage was to Caroline H. Stollenwerck in 1930.[15] His third marriage was to Ruth Foster (1911–1958) in 1931.
In 1933, he married for the fourth and final time to Margaret A. Flett (d. 1968), the daughter of David H. Flett of Racine, Wisconsin.[16] Together, they were the parents of one child:[16]
David Flett du Pont (c. 1934–1955), who died at age twenty-one as a result of an automobile accident at Fishers Island, New York on October 3, 1955.[17]
