Tatiana Schlossberg - the daughter of Caroline Kennedy and granddaughter of late U.S. President John F. Kennedy - died on Tuesday, December 30, following a terminal cancer diagnosis. She was 35. "Our beautiful Tatiana passed away this morning. She will always be in our hearts," the JFK Library Foundation shared in a statement via Instagram signed by Tatiana's husband, George Moran, their two children, Edwin, 3, and Josephine, 19 months, her parents, Edwin Schlossberg and Caroline Kennedy, her siblings, Jack and Rose Schlossberg, and her sister-in-law, Rory Schlossberg. Born in New York in May 1990, Tatiana joined the prominent Kennedy family, counting Caroline as her mother and John and his widow, Jacqueline Kennedy Onassis, as her grandparents. After earning an undergraduate history degree from Yale University in 2012 and a master's from the University of Oxford in 2014, Tatiana pursued a career in journalism, working as a reporter for The New York Times until 2017. Two years later, she published her debut book, Inconspicuous Consumption: The Environmental Impact You Don't Know You Have. Tatiana Schlossberg Family Guide: Meet Her Husband, Their 2 Kids and More As for her personal life, Tatiana married Moran in September 2017 after they met as undergrads at Yale. The couple welcomed their son, Edwin, in early 2022 and their daughter, Josephine, in May 2024. In November 2025, Tatiana revealed in a New Yorker essay that she had been given a year to live after being diagnosed with acute myeloid leukemia. She learned of her illness with "a rare mutation called Inversion 3" after her doctor noticed an imbalance in her white blood cell count following the birth of her second baby. She was initially told she would need to undergo months of chemotherapy and receive a bone-marrow transplant. Tatiana Schlossberg. Craig Barritt/Getty Images for New York Magazine "I did not - could not - believe that they were talking about me. I had swum a mile in the pool the day before, nine months pregnant. I wasn't sick. I didn't feel sick. I was actually one of the healthiest people I knew," she wrote. "I had a son whom I loved more than anything and a newborn I needed to take care of." As she struggled with her health crisis, Tatiana relied on Moran for support. A Comprehensive Guide to the Entire Kennedy Family: From JFK to RFK Jr. "George did everything for me that he possibly could," she noted. "He talked to all the doctors and insurance people that I didn't want to talk to; he slept on the floor of the hospital; he didn't get mad when I was raging on steroids and yelled at him that I did not like Schweppes ginger ale, only Canada Dry. He would go home to put our kids to bed and come back to bring me dinner." She added: "I know that not everyone can be married to a doctor, but, if you can, it's a very good idea. He is perfect, and I feel so cheated and so sad that I don't get to keep living the wonderful life I had with this kind, funny, handsome genius I managed to find." After having her daughter, Tatiana underwent a bone-marrow transplant at Memorial Sloan Kettering and received chemotherapy treatments at home. However, after joining a clinical trial of CAR-T-cell therapy - a type of immunotherapy intended to fight certain blood cancers - in January 2025, she was informed of her life expectancy. The Most Shocking Celebrity Deaths of All Time: Diane Keaton and More "My first thought was that my kids, whose faces live permanently on the inside of my eyelids, wouldn't remember me," she recalled. "My son might have a few memories, but he'll probably start confusing them with pictures he sees or stories he hears. I didn't ever really get to take care of my daughter - I couldn't change her diaper or give her a bath or feed her, all because of the risk of infection after my transplants. I was gone for almost half of her first year of life. I don't know who, really, she thinks I am, and whether she will feel or remember, when I am gone, that I am her mother." Tatiana went on to share her gratitude to her parents and siblings for helping to care for her children during her illness. "They have held my hand unflinchingly while I have suffered, trying not to show their pain and sadness in order to protect me from it," she wrote. "This has been a great gift, even though I feel their pain every day." Tatiana is survived by Moran, her two children, her parents and her siblings.