Watch: Tatiana Schlossberg, Caroline Kennedy's Daughter, Dead at 35The Kennedy family is in mourning. John F. Kennedy's granddaughter Tatiana Schlossberg, daughter of the late U.S. president's daughter Caroline Kennedy and husband Edwin Schlossberg, has died after a cancer battle. She was 35. "Our beautiful Tatiana passed away this morning," her family shared in a statement posted to Instagram Dec. 30. "She will always be in our hearts." Tatiana, an environmental journalist, had revealed in an essay published in The New Yorker on Nov. 22 that she was dying from myeloid leukemia.