John F Kennedy's granddaughter Tatiana Schlossberg has died at the age of 35, just a month after revealing her terminal cancer diagnosis.
A post on the JFK Library Foundation's Instagram account said Ms Schlossberg, the daughter of former US ambassador Caroline Kennedy, died on Tuesday.
"Our beautiful Tatiana passed away this morning," it read. "She will always be in our hearts."
The post was signed off as being from Ms Schlossberg's husband, George, and their two children, Edwin and Josephine, as well as her parents and siblings.
The 35-year-old's father is designer and artist Edwin Schlossberg. She had one brother, Jack, and a sister, Rose, who donated stem cells for her cancer treatment.
Ms Schlossberg, an environmental journalist, attacked her relative Robert F Kennedy Jr as she revealed her cancer diagnosis on the anniversary of JFK's assassination in November.
She said measures backed by RFK Jr, a long-time vaccine critic, could hurt cancer patients.
Ms Schlossberg wrote in an essay for The New Yorker: "As I spent more and more of my life under the care of doctors, nurses, and researchers striving to improve the lives of others, I watched as Bobby cut nearly a half billion dollars for research into mRNA vaccines, technology that could be used against certain cancers."
After the birth of her second child, a doctor noticed her high white blood cell count, which turned out to be acute myeloid leukaemia with a rare mutation.
Ms Schlossberg wrote she has undergone rounds of chemotherapy, two stem cell transplants and participated in clinical trials. She also spoke of fearing her young children would not remember her.
(c) Sky News 2025: JFK's granddaughter Tatiana Schlossberg dies aged 35
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