Environmental journalist Tatiana Schlossberg, granddaughter of President John F. Kennedy, has died. She was 35.
Schlossberg, daughter of Kennedy’s daughter, Caroline Kennedy, and Edwin Schlossberg, revealed she had terminal cancer in a November 2025 essay in The New Yorker.
Her death was announced in an Instagram post by the John F. Kennedy Library Foundation.
“Our beautiful Tatiana passed away this morning. She will always be in our hearts,” the statement said. It did not disclose a cause of death or say where she had died.
Schlossberg was diagnosed with acute myeloid leukemia in May 2024 at 34. After the birth of her second child, her doctor noticed her white blood cell count was high. It turned out to be acute myeloid leukemia with a rare mutation, mostly seen in older people.
In the essay, “A Battle With My Blood,” Schlossberg recounted going through rounds of chemotherapy and two stem cell transplants and participating in clinical trials. During the most recent 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, Health and Human Services Secretary Robert F. Kennedy Jr., in the essay, saying policies he backed could hurt cancer patients like her. Her mother had urged senators to reject his confirmation.