Environmental journalist Tatiana Schlossberg, one of three grandchildren of the late President John F. Kennedy, has died after she was diagnosed with leukemia last year. 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. A family statement disclosing her 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 statement said. It did not disclose a cause of death or say where she had died.

Maria Shriver, a niece of John F. Kennedy and a former award-winning TV journalist, grieved for Schlossberg on social media 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.”

“She loved her life, and she fought like hell to try to save it,” Shriver wrote.