Cynthia Cary Van Pelt Russell (born October 16, 1924) is an American socialite, who was part of American 'High Society' in New York and Newport, Rhode Island, and is a first cousin once removed of Diana, Princess of Wales.
She is the daughter of Guy Fairfax Cary (1879–1950) and Cynthia Roche (1884–1966), who married in 1922. Her brother was Guy Fairfax Cary II (1923–2004), who did not marry.
Her maternal grandparents were James Roche, 3rd Baron Fermoy (1851–1920) and Frances Ellen Work (1857–1947), and her mother's siblings were Maurice Roche, 4th Baron Fermoy (the maternal grandfather of Diana, Princess of Wales), and the Hon. Francis Burke Roche. Her paternal grandparents were Elizabeth Miller Potter (1856–1945) and Clarence Cary (1845–1911), who grew up at Vaucluse plantation with his sister, Constance Cary (1843–1920). Elizabeth Miller Potter was a granddaughter of Alonzo Potter. Her great-grandparents, Archibald Cary and Monimia Fairfax were a Southern planter aristocrat family. Archibald Cary was the son of Wilson Jefferson Cary and Virginia Randolph. Monimia Fairfax was the daughter of Thomas Fairfax, 9th Lord Fairfax of Cameron.
She was married first to lawyer Charles Bingham Penrose Van Pelt (1922–2003), the son of Andrew Van Pelt and Sarah Hannah Boles Penrose. He graduated from the Groton School, Harvard University and the University of Pennsylvania Law School and served in the U.S. Army Military Intelligence in the Pacific during World War II. Before their divorce, they had two sons and daughter: