Lammot du Pont II

Lammot du Pont II (October 12, 1880 – July 24, 1952) was an American businessman who was the head of the du Pont family's E. I. du Pont de Nemours and Company for 22 years.
Early life.
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), and his wife, Mary (née Belin) du Pont (1839–1913). Among his siblings were brothers Pierre S. du Pont and Irénée du Pont, who were both involved in the Du Pont Company. His father died during a nitroglycerin explosion in 1884.
His maternal grandparents were Henry Hedrick Belin and Isabella (née d'Andelot) Belin and his paternal grandparents were Alfred Victor DuPont and Margaretta Elizabeth (née Lammot) DuPont. His was also a great-grandson of the French-born Éleuthère Irénée du Pont, the founder of E. I. du Pont de Nemours and Company.
Career.
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.
Lammot served as 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.
Personal life.
Du Pont was married four times. His first marriage was on January 27, 1903 to Natalie Driver Wilson (1877–1918), at St. John's P. E. Church and officiated by Bishop Coleman. Natalie was a sister of Rodgers Wilson. Together, Lammont and Natalie were the parents of:
His second marriage was to Caroline H. Stollenwerck in 1930. 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. Together, they were the parents of one child:
Du Pont died on July 24, 1952 in New London, Connecticut of heart disease at age 71.
Descendants.
Through his son Reynolds, he was the grandfather of Natalie du Pont and Katharine du Pont, who married Peter Durant Sanger. After Sanger's death, she married Lewis Polk Rutherfurd, who the widower of Janet Auchincloss Rutherfurd (half-sister of Jackie Kennedy and Lee Radziwill).