Environmental journalist and author Tatiana Schlossberg, who was one of the grandchildren of former U.S. President John F Kennedy, died on December 30. She was 35.The John F Kennedy Library Foundation announced the death via Instagram.“Our beautiful Tatiana passed away this morning. She will always be in our hearts. George, Edwin and Josephine Moran. Ed, Caroline, Jack, Rose and Rory,” the caption read alongside an image of the deceased.Tatiana Schlossberg was the daughter of author, diplomat, and attorney Caroline Kennedy and her designer-artist husband Edwin Schlossberg. She has two siblings, Jack (born as John) and Rose.While Jack Schlossberg, 32, is a political commentator and writer, who is now running for Congress in New York, Rose Schlossberg is a video installer, filmmaker, artist, and actress. View this post on Instagram Instagram PostTatiana’s cause of death was not given. However, last month, The New Yorker published an essay titled “A Battle With My Blood,” where she wrote about her diagnosis of an aggressive form of cancer and that doctors have given her less than a year to live.The climate journalist revealed she was diagnosed with acute myeloid leukaemia in May 2024 after giving birth. Additionally, she has undergone a bone marrow transplant, chemotherapy, and was part of a clinical trial; yet her prognosis wasn’t good.About Rose Schlossberg amid Tatiana Schlossberg’s demiseRose Kennedy Schlossberg was born in June 1988 in New York City and was raised in Manhattan’s Upper East Side and Martha’s Vineyard. She is named after her maternal great-grandmother and the Kennedy family’s matriarch, Rose Fitzgerald Kennedy, who was a philanthropist, socialite, and the mother of John F Kennedy.However, Rose is often described as the modern-day lookalike of her own grandmother and JFK’s wife, Jacqueline Bouvier Kennedy Onassis, aka Jackie Kennedy.Tatiana Schlossberg’s only sister graduated with a bachelor’s degree in English Studies from Harvard University in 2010. At the time, she was also a research assistant at the Radcliffe Institute. Later, she obtained her master’s degree in Interactive Telecommunications from New York University.During her college days, Rose became interested in filmmaking and acting. Eventually, she took up direction and created several music videos, short films, documentaries, installation art, and web series. These include the comedy-apocalyptic internet show End Times Girls Club, the 2017 Peabody Award-winning documentary Time: The Kalief Browder Story, and the short film Small Gay Tragedy #1.Tatiana and Jack’s elder sister was part of the Kennedy family video where they paid tribute to JFK on his centenary birth anniversary in 2017. Rose was heard saying:“I’m inspired by [his] sense of equality, his courage in naming the injustices in American society, and his call for action.”Ms Schlossberg also appeared in the two 2020 pro-voting video campaigns for Dover Street Market and When We All Vote alongside photographer Cam Hicks, artist Kunle Martins, fashion designer Marc Jacobs, and Maroon World co-founders, Travis and Cynthia Gumbs.“If you are worried about being cool, don’t waste another minute; go online and register to vote today. We are making it as easy as possible for you to finally be cool,” Rose stated in the video.Elsewhere, she has collaborated with Hyd, Dougie Poole, Ducktails, Broadway Video, TruTV, and Warner Bros.Jack, Rose, and Tatiana Schlossberg with their parents at Ireland Commemorates The 50th Anniversary Of The Visit By John F Kennedy - Source: GettySchlossberg prefers to maintain a low profile. She currently resides in Ojai, California, with her wife and restaurateur Rory McAuliffe. They tied the knot in 2022 at their home in the presence of 300 guests, including Jason Segel, David Letterman, Maria Shriver, and Jimmy Buffett.McAuliffe co-owns Rory’s Place with her chef sister Meave. Before that, Rory was a freelance documentary/ short film producer.Tatiana Schlossberg, who was a former climate and science reporter/ columnist for the New York Times, wrote in her final essay in November how her cancer diagnosis affected her family.“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. 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," Tatiana Schlossberg stated.The Vogue political correspondent continued:“My first thought was that my kids, whose faces live permanently on the inside of my eyelids, wouldn't remember me.”As a climate activist, Tatiana Schlossberg also wrote the 2019 non-fiction, Inconspicuous Consumption: The Environmental Impact You Don't Know You Have.Tatiana Schlossberg is survived by her parents, two siblings, her physician husband of eight years, George Moran, and their two children, Edwin and Josephine.