Who Are J. Robert Oppenheimer’s Grandchildren?

As the Atomic Heritage Foundation (AHF) says, neither Dorothy Vanderford (née Oppenheimer) nor Charles Oppenheimer knew their grandfather. Dorothy was born in 1973 and Charles in 1975. Sites like Insider confirm that little information exists about J. Robert Oppenheimer’s third grandchild, Ella, although Oppenheimer’s mother was named Ella. This means that Peter Oppenheimer named one of his daughters after his grandmother. 

As News 3LV explains, Dorothy has followed closest in her grandfather’s physical footsteps. She works at the Nevada National Security Site (NNSS), a nuclear response-and-readiness facility dedicated to nuclear nonproliferation, U.S. national security, and “long-term environmental stewardship of the NNSS’s Cold War legacy.” Interestingly, until 2010 the NNSS used to be the Nevada Test Site (NTS), the President Harry Truman-appointed stretch of desert 65 miles north of Las Vegas used for nuclear bomb testing in the 1950s. As of 2023, News 3LV said Dorothy is a technical writer in her role at the facility.

Charles also plays an active role in his grandfather’s legacy. His bio on the Oppenheimer Project — an Oppenheimer family-run organization “committed to honoring the legacy of J. Robert Oppenheimer” — describes him as a software developer, investor, and entrepreneur. In the same vein his Twitter bio says that he “represent[s] the family of J. Robert Oppenheimer.” He’s also written op-eds about his grandfather on sites like the Bulletin of the Atomic Scientists, where he describes his grandfather as a science-loving person who did his duty to his country and was shunned after the fact.