- Category : 1904-births
- Type : MEG
- Profile : 1/3 - Investigating / Martyr
- Definition : Single
- Incarnation Cross : RAX Unexpected 4
American heiress and member of the Vanderbilt family, as the only daughter of Reginald Claypoole Vanderbilt (1880–1925) and his first wife, Cathleen (nee Neilson) Vanderbilt (1885–1927), who married in Newport, Rhode Island in 1903. Before her parents eventual divorce in 1920, they separated and she continued to live with her mother. After the divorce, her mother remarried to Sidney Jones Colford Jr. in 1921, and her father remarried to Gloria Mercedes Morgan, with whom he had one more daughter, Gloria Vanderbilt.
After her father's death in September 1925, Cathleen and her half-sister Gloria inherited the bulk of their father's estate, including a $5,000,000 trust established by Reginald's father, Cornelius II, in 1899.
Cathleen Vanderbilt married three times, and had one son, Henry Cooke Cushing IV (1924–2000), a polo player and investor.
After a two month illness, Cathleen died at the Anglo-American Hospital in the Vedado district of Havana on 25 January 1944, two days after her 40th birthday.