The death of Tatiana Schlossberg is proving to be difficult to process for many of her family members, including her mom, Caroline Kennedy. "When you think about the losses Caroline has suffered, it was only [her brother] John that had suffered the same - and then she lost John," Kennedy historian Steven M. Gillon shared with People in an interview published on Tuesday, January 6. "For Caroline, it's a series of horrible personal tragedies that lead up to what may be the hardest of them all." On Monday, January 5, family and friends gathered at St. Ignatius Loyola Catholic Church in New York City for Schlossberg's funeral. Schlossberg, the granddaughter of late United States President John F. Kennedy - who shared children Edwin, 3, and Josephine, 19 months, with husband George Moran - died on December 30 following a battle with a rare blood cancer known as acute myeloid leukemia. She was 35. Kennedy Family Members Mourn Tatiana Schlossberg's Death at 35 After Cancer "Tatiana's son is the same age that John was when he lost his dad," Gillon pointed out. "Tragically, history is repeating itself." Caroline has already lived through the assassinations of her father and her uncle, Robert F. Kennedy, as well as the death of her younger brother, John, in a fatal plane crash. As she begins to grieve the loss of her daughter, Caroline won't be mourning alone. During Schlossberg's funeral, relatives such as Kerry Kennedy and Joe Kennedy III were in attendance, as well as family friends like David Letterman and Carolina Herrera, People reported. Prince William, Caroline Kennedy, Jack Kennedy Schlossberg and Tatiana Kennedy Schlossberg MATT STONE/POOL/AFP via Getty Images After graduating from Yale University and the University of Oxford, Schlossberg pursued a career in journalism, working as a reporter for The New York Times until 2017. She published her debut book, Inconspicuous Consumption: The Environmental Impact You Don't Know You Have, two years later. In November 2025, she used her gift of writing to reveal in a personal essay for The New Yorker that she had been given a year to live after being diagnosed with acute myeloid leukemia. "For my whole life, I have tried to be good, to be a good student and a good sister and a good daughter, and to protect my mother and never make her upset or angry," Schlossberg wrote in her essay. "Now I have added a new tragedy to her life, to our family's life, and there's nothing I can do to stop it." Many family members have praised Schlossberg for her courage and strength as she faced a terminal disease. Inside Tatiana Schlossberg's Cancer Battle With Acute Myeloid Leukemia "Tatiana was a great journalist, and she used her words to educate others about the earth and how to save it," Maria Shriver wrote via Instagram on January 1. "She created a beautiful life with her extraordinary husband George, and children Eddie and Josie. She fought like a warrior. She was valiant, strong, courageous." When reflecting on Caroline's latest loss, Maria couldn't help but praise her cousin for moving forward each and every day. "My heart has always been with my cousin Caroline ever since we were little kids," she wrote. "My entire being is with her now. What a rock she has been. What a source of love she has been."