Margaret Rockefeller Strong

Margaret Rockefeller Strong (June 11, 1897 – December 5, 1985) was an American heiress and prominent member of the Rockefeller family. She was the maternal granddaughter of John D. Rockefeller and his wife Laura Spelman Rockefeller.

She was the daughter of Elizabeth "Bessie" Rockefeller (1866–1906) and Dr. Charles Augustus Strong (1862–1940). Her maternal grandfather was Standard Oil co-founder John D. Rockefeller (1839–1937).

Margaret saved a row of Neo-Federal townhouses on Park Avenue designed by McKim, Mead & White from destruction by purchasing the property and giving one of the townhouses to the Queen Sofía Spanish Institute in 1965. She then donated the corner townhouse to her cousin, David Rockefeller, who there founded the Center for Inter-American Relations, now the Americas Society. In December 1979, Margaret donated her father's estate, Villa Le Balze in Fiesole, Tuscany, Italy to Georgetown University which operates an overseas campus there.

Her life can be read at El Inútil de la Familia, a book written by Jorge Edwards, a Chilean writer.

She married Chilean ballet businessman George de Cuevas on August 3, 1927. They had two children:

By the time her husband George de Cuevas died in 1961, they had been separated. On April 25, 1977, she married his protégée Raymundo de Larrain (Raimundo Larraín Valdés), who was over thirty years her junior. Although several newspapers reported that de Larrain was the nephew of her late husband—and he even referred to him as his uncle—they were not actually related by blood. He was a descendant of the Chilean aristocratic Larraín family. He choreographed, designed sets and costumes for de Cuevas's ballet company and was later a photographer.

Following her death in 1985, there was a dispute about her estate between her husband and children, which ended in a court settlement in 1987.