Jack Schlossberg, the grandson of President John F. Kennedy, has revealed the last words his late sister Tatiana said to him before she died of leukaemia in December 2025. Speaking on CBS Sunday Morning, Jack recalled that weeks after Tatiana disclosed her terminal diagnosis, she urged him to succeed in his bid for Congress in New York's 12th District. 'The last thing that she said to me was, You better win,' he said. 'No one knew me better, and I knew no one better than her.'
Reflecting on his upbringing with Tatiana and his older sister Rose, Jack described the experience as 'brutal' but acknowledged their influence. 'They taught me everything I know about how to be a strong person,' he added. The siblings were raised by their parents, Caroline Kennedy and Edwin Schlossberg.
Tatiana Schlossberg died at home, surrounded by family. Her husband George Moran, their three-year-old son, and one-year-old daughter survive her. The JFK Library Foundation announced her death in a statement signed by her family, which read: 'Our beautiful Tatiana passed away this morning. She will always be in our hearts.'
Tatiana revealed her diagnosis of acute myeloid leukaemia in a New Yorker essay published on 22 November 2025, the anniversary of her grandfather’s assassination. She described her disbelief at being diagnosed with a disease most common in older people, having swum a mile the day before, nine months pregnant. Doctors first detected elevated white blood cell counts hours after she gave birth in May 2024.
In the essay, she expressed fear that her young children would not remember her. 'During the latest clinical trial, my doctor told me that he could keep me alive for a year, maybe. My first thought was that my kids, whose faces live permanently on the inside of my eyelids, wouldn’t remember me,' she wrote.
