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. She received the terminal diagnosis after a blood test conducted after the May 2024 birth of her and husband George Moran's daughter-whose name has not been made public-showed she had an elevated white blood cell count. Tatiana-who also shares son Edwin, 3, with George-wrote that she spent five weeks in the hospital, and underwent chemotherapy and two bone marrow transplants, with stem cells donated by her sister Rose Schlossberg, 37, and by an anonymous donor she know only to be a "man in his twenties from the Pacific Northwest." She was also part of two immunotherapy clinical trials.readMaria Shriver Addresses Tatiana Schlossberg's "Bravery" Amid Terminal Cancer Diagnosis"During the latest clinical trial, my doctor told me that he could keep me alive for a year, maybe," Tatiana wrote. "My first thought was that my kids, whose faces live permanently on the inside of my eyelids, wouldn't remember me. 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," she continued. "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."Craig Barritt/Getty Images for New York MagazineTatiana also shared what she would have done in her life if things had been different, and the legacy she will leave her kids. "My plan, had I not gotten sick, was to write a book about the oceans-their destruction, but also the possibilities they offer," she noted. "My son knows that I am a writer and that I write about our planet. Since I've been sick, I remind him a lot, so that he will know that I was not just a sick person."BEN STANSALL/AFP via Getty ImagesTatiana, the second of Caroline and Edwin's three children, was born Tatiana Celia Kennedy Schlossberg in New York in 1990. Over the past decade, Tatiana pursued science and climate journalism, publishing many articles about issues such as ocean conservation, climate change and global warming in outlets such as The New York Times and in her own newsletter, News from a Changing Planet. She also released the 2019 book Inconspicuous Consumption: The Environmental Impact You Don't Know You Have. "I try to write with humility, which translates to some as a lack of expertise," Tatiana wrote on her website. "I think humility is important, especially with science: I don't know everything, and things change all the time. I think we've gotten ourselves into a lot of trouble as a species and a culture by not embracing uncertainty and the blurriness of ideas." In addition to her husband, kids, parents and sister, Tatiana is also survived by her brother Jack Schlossberg, 32. Look back at the Kennedy family over the years...

Everett/ShutterstockJoseph P. Kennedy and Rose KennedyJoseph Patrick "Joe" Kennedy married Rose Elizabeth Fitzgerald on Oct. 7, 1914.

Bachrach/Getty ImagesBy 1932, they had nine children together: Joseph P. Kennedy Jr., John F. Kennedy, Rosemary Kennedy, Kathleen Kennedy, Eunice Kennedy, Patricia Kennedy, Robert F. Kennedy, Jean Kennedy and Edward Kennedy.

Keystone-France/Gamma-Keystone via Getty ImagesJoseph P. Kennedy Jr.

Born July 25, 1915, Joe Jr. was going to be president, as far as his father was concerned. He was a delegate to the 1940 Democratic National Convention and planned to run for Congress after he got out of the Navy. But the 29-year-old and his co-pilot Wilford John Willy were killed Aug. 12, 1944, when explosives they were carrying detonated prematurely while on a bombing run that was part of Operation Aphrodite. Neither pilot's body was ever recovered and their names are among those on the Tablets of the Missing at the Cambridge American Cemetery and Memorial honoring casualties of World War II.

Mikki Ansin/Getty ImagesJohn F. KennedyIt was John, born May 29, 1917, who made it to Congress, then became a U.S. senator and ultimately was elected president in 1960. He married Jacqueline Bouvier on Sept. 12, 1953, and they welcomed daughter Caroline Kennedy on Nov. 27, 1957, and son John F. Kennedy Jr. on Nov. 25, 1960. A daughter, Arabella, was stillborn in 1956 and son Patrick, born prematurely on Aug. 7, 1963, lived for only 39 hours. JFK w