William Winder ‘Chick” Laird, Jr. (1910-1989) was a director of E. I. du Pont de Nemours and a financial advisor, starting his own brokerage firm in Wilmington, Delaware. He was the son of William Winder Laird (1878-1927) and Mary Alletta Belin DuPont Laird (1878–1938). He had four siblings. His mother was great granddaughter of Eleuthere Irenee du Pont (1771-1834), founder of E.I. du Pont de Nemours & Company, a chemical company more commonly referred to as the DuPont company. Her parents were Lammot du Pont (1831-1884) and Mary Belin du Pont (1839-1913). Mary Alletta Belin DuPont Laird was one of eleven children. Laird Jr. had many cousins, most of whom lived nearby on named estates in Delaware. Laird, Jr. spent many of his later years collecting local and Du Pont family history.

His father, William Winder Laird (1878-1927) was actively involved in the DuPont Company as well as an advisor to his brother in law, Pierre S. du Pont (1870-1954).