Tatiana Schlossberg, a journalist and one of three grandchildren of the late President John F. Kennedy, died at 35 on Tuesday after a battle with leukemia, according to a statement her family released and the John F. Kennedy Library Foundation posted online. The statement said, “Our beautiful Tatiana passed away this morning. She will always be in our hearts,” and it did not disclose a cause of death or where she died.
Schlossberg had previously described her illness publicly, telling readers in a November 2025 essay that she had been diagnosed with acute myeloid leukemia. In that account, she wrote that after she was in the hospital for the birth of her second child, her doctor noticed her white blood cell count was high and that the diagnosis was later confirmed as acute myeloid leukemia with a rare mutation, which she said is mostly seen in older people.
In the same essay, Schlossberg described undergoing rounds of chemotherapy, as well as two stem cell transplants, and said she took part in clinical trials. She also wrote that during her most recent trial, her doctor told her “he could keep me alive for a year, maybe,” describing the uncertainty as the treatment continued.
Schlossberg’s earlier reporting and awards focused on climate change and the environment. She worked as a reporter covering climate change and the environment for The New York Times’ Science section, and her 2019 book “Inconspicuous Consumption: The Environmental Impact You Don’t Know You Have” won the Society of Environmental Journalists’ Rachel Carson Environment Book Award in 2020.
Her family said in Tuesday’s statement that she had passed away, but it did not provide additional medical details. On social media, Maria Shriver, a niece of John F. Kennedy and a former television journalist, mourned Schlossberg and called her “the light, the humor, the joy” and “a great journalist” who “used her words to educate others about the earth and how to save it.”
Shriver wrote, “She loved her life, and she fought like hell to try to save it,” in a tribute posted after learning of Schlossberg’s death. In the November essay, Schlossberg also wrote about fearing her daughter and son would not remember her, and she said she felt cheated and sad that she would not be able to keep living “the wonderful life” she had with her husband, George Moran.
Schlossberg’s account described the emotional strain that surrounded her treatment and family life, saying she felt her pain every day even as her parents and siblings tried to hide it from her. She said that her siblings—Rose and Jack Schlossberg—were the other two grandchildren of John F. Kennedy.
The family’s public history includes multiple deaths spanning decades. Caroline Kennedy was 5 years old when her father, President John F. Kennedy, was assassinated in Dallas in 1963, and she was 10 when her brother Robert F. Kennedy was assassinated in Los Angeles in 1968 while running for president. 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, killing his wife Carolyn and her sister Lauren Bessette as well.
Sources say Levy reported from Harrisburg, Pennsylvania, and Brumfield from Cockeysville, Maryland.