Tatiana Schlossberg, Granddaughter of the Late John F. Kennedy, Dies at 35

Environmental journalist Tatiana Schlossberg, one of the three grandchildren of the late US President John F. Kennedy, has died. She was 35 years old.

Schlossberg, the daughter of Kennedy’s daughter Caroline Kennedy and Edwin Schlossberg, revealed that she was suffering from terminal cancer in a November 2025 essay in the New Yorker. A family statement revealing his death was posted on social media Tuesday by the John F. Kennedy Library Foundation.

“Our beautiful Tatiana passed away this morning. She will always be in our hearts,” the family’s statement said. He did not reveal the cause of death or indicate the location of his death.

Diagnosis of leukemia

Schlossberg was diagnosed with acute myeloid leukemia in May 2024, at the age of 34. After the birth of her second child, her doctor noticed that her white blood cell count was high. It turned out to be acute myeloid leukemia with a rare mutation, seen mainly in older people.

In the New Yorker essay “A Battle With My Blood,” Schlossberg recounts undergoing rounds of chemotherapy and two stem cell transplants and participating in clinical trials. At the last trial, she wrote, her doctor told her “he could keep me alive for a year, maybe.”

Schlossberg also criticized policies pushed by her mother’s cousin, U.S. Health and Human Services Secretary Robert F. Kennedy Jr., in the essay, saying they could harm cancer patients like her. His mother had urged senators to reject his confirmation.

“As I spent more and more of my life under the care of doctors, nurses, and researchers striving to improve the lives of others, I watched Bobby cut nearly half a billion dollars for research into mRNA vaccines, a technology that could be used against certain cancers,” the essay states.

Schlossberg had worked as a reporter covering climate change and the environment for the science section of The New York Times. His 2019 book Discreet consumption: the environmental impact you don’t know exists won the Society of Environmental Journalists’ Rachel Carson Environmental Book Prize in 2020.

Schlossberg wrote in the New Yorker essay that she feared her daughter and son would not remember her. She said she felt cheated and sad that she couldn’t continue living “the wonderful life” she had with her husband, George Moran.

While her parents and siblings, Rose and Jack, tried to hide their pain from her, she said she felt it every day.

“All my life I tried to be good, to be a good student, a good sister and a good daughter, and to protect my mother and never upset her or make her angry,” she said. “Now I have added new tragedy to his life, to our family’s life, and there is nothing I can do to stop it.”

Schlossberg’s mother Caroline was five when her father was assassinated in Dallas in 1963. She was 10 when her uncle, Robert F. Kennedy, was assassinated in Los Angeles in 1968 while running for president.

Caroline’s brother, John F. Kennedy Jr., died in 1999 when the single-engine plane he was piloting plunged into the Atlantic Ocean near Martha’s Vineyard, Massachusetts. His wife, Carolyn, and sister, Lauren Bessette, also died in the crash.