[1] She was raised at Owl's Nest, the family's estate in Greenville, Delaware,[3] attended Misses Hebb's School in Wilmington and graduated from the Ethel Walker School in Simsbury, Connecticut.

[6] In December 1950, Ethel du Pont Roosevelt married prominent Detroit lawyer Benjamin S. Warren, Jr.

Together, they had a son:[7] Ethel du Pont was 49 years old when she died by suicide on May 25, 1965.

[9] Afterward, her family endowed the Harvard Medical School Ethel Dupont-Warren Fellowship Award for research in Psychiatry.

[11] As of 2023, the fellowship continues to support the salary of 3 to 4 young research psychiatrists per year.