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Jack Schlossberg Supports Sister Tatiana Schlossberg After Terminal Cancer Diagnosis
The 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.
"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."
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Tatiana 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."
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Tatiana, 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...
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Joseph P. Kennedy and Rose Kennedy
Joseph Patrick "Joe" Kennedy married Rose Elizabeth Fitzgerald on Oct. 7, 1914.
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By 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.
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Joseph 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.
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John F. Kennedy
It 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 was assassinated on Nov. 22, 1963, one of the defining events of the 20th century.
Tatiana, Jack, Rose, Edwin, Caroline (Clodagh Kilcoyne/Getty Images)
Caroline Kennedy
Caroline, the U.S. ambassador to Japan during the Obama administration and to Australia for the Biden administration, married Edwin "Ed" Schlossberg in 1986.
They share daughters Rose Kennedy Schlossberg (born June 25, 1988) and Tatiana Kennedy Schlossberg (May 5, 1990) and son John "Jack" Bouvier Kennedy Schlossberg (Jan. 19, 1993).
TV producer Rose went to Harvard like her mom and married restaurateur Rory McAuliffe in 2022.
Tatiana—a journalist who didn't know at the time that her 2014 New York Times article about a dead bear being found in Central Park involved her cousin RFK Jr.—graduated from Yale and married college sweetheart George Moran in 2017. They welcomed a son, Edwin Jr., in 2022, and a daughter in 2024.
In November 2025, Tatiana shared in an essay for The New Yorker that she was diagnosed with acute myeloid leukemia, a rare blood cancer, which her doctors have said is terminal.
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Jack Schlossberg
Jack—a Yale alum, graduate of Harvard's JD/MBA program and quite the hoot on social media—spoke at the 2024 Democratic National Convention and was a political correspondent for Vogue covering the most recent presidential election.
"I am inspired by my family’s legacy of public service,” he told Vogue in 2024. "I take that very seriously, and I want to contribute in my own way. I have big dreams, but I also know that I’m trying to make a positive impact today."
That starts with a run for congress, Jack announcing in November 2025 he would seek a seat representing New York’s 12th congressional district.
Justin Ide
John F. Kennedy Jr.
The former first son, named People's Sexiest Man Alive in 1988, was considered one of the most eligible bachelors on the planet before he married Calvin Klein publicist Carolyn Bessette on Sept. 21, 1996.
In a shattering twist of fate for his oft-grieving family, JFK Jr. died young like his father, his potential snuffed out when he was killed, along with Carolyn and her sister Lauren Bessette, in a plane crash on July 16, 1999.
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Rosemary Kennedy
Rosemary (at right, with sister Kathleen and mom Rose) was born Sept. 13, 1918.
While she attended a special boarding school for students with learning difficulties, Rosemary had behavioral issues that led to her father's decision to have her undergo a prefrontal lobotomy when she was 23.
Rosemary emerged from the experimental procedure—which was touted as a potential cure for mental illness and Joe did hope it would help her—severely disabled and spent the rest of her life (she lived till Jan. 7, 2005) institutionalized.
"All along I had continued to believe that she could have lived her life as a Kennedy girl, just a little slower," Rose told historian Doris Kearns Goodwin years later. "But then it was all gone in a matter of minutes."
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Kathleen "Kick" Kennedy
Born Feb. 20, 1920, Kathleen got a kick out of life, hence her jaunty nickname.
She married William Cavendish, the Marquess of Hartington, in a civil ceremony in London on May 6, 1944—against her mother's wishes, as her beloved wasn't Catholic, so the bride's big brother Joe Jr. was the only member of her family who attended the wedding.
A month later, William, a major in the British Army, was killed by a sniper in Belgium.
She remained in England and fell for still-married William Wentworth-Fitzwilliam, 8th Earl Fitzwilliam. Before he could secure a divorce, they both died when the plane carrying them to the French Riviera crashed on May 13, 1948.
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Eunice Kennedy Shriver
Eunice was born July 10, 1921.
The devoted philanthropist and founder of the Special Olympics married Robert Sargent Shriver Jr. on May 23, 1953.
They had five children—Robert "Bobby" Shriver III (born April 28, 1954), Maria Shriver (Nov. 6, 1955), Timothy (Aug. 29, 1959), Mark (Feb. 17, 1964) and Anthony (July 20, 1965).
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Maria Shriver
Maria wed Arnold Schwarzenegger on April 26, 1986, at the Kennedy family compound in Hyannis Port, Mass.
The power couple reigned as governor and first lady of California from November 2003 until January 2011, but they split up not long after once Arnold confessed to fathering a son, Joseph Baena, with the family's longtime housekeeper.
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Katherine Schwarzenegger
When she died at 88, Eunice had 19 grandchildren, including Maria's four kids with her now-ex-husband: Katherine Schwarzenegger (born Dec. 13, 1989), Patrick Schwarzenegger (Sept. 18, 1993), Christina Schwarzenegger (July 23, 1991) and Christopher Schwarzenegger (Sept. 27, 1997).
Katherine wed Chris Pratt on June 8, 2019, and they share three children, Lyla (Aug. 6, 2020), Eloise (May 21, 2022) and Ford (Nov. 8, 2024). The actor is also dad to son Jack (born Aug. 17, 2012) with ex-wife Anna Faris.
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Patricia Kennedy Lawford
Patricia, born May 6, 1924, brought the Rat Pack into the family when she married Peter Lawford on April 24, 1954.
Her marriage to the British actor produced sons Christopher Lawford (born in 1955), Sydney Maleia Lawford (1956), Victoria Francis Lawford (1958), and Robin Elizabeth Lawford before they divorced in 1966.
Peter, who died in 1984, was a close confidante of his brother-in-law JFK and is generally credited with introducing the future president to Marilyn Monroe during a visit to the Lawfords' Malibu home.
Patricia passed away in 2006. Her thrice-married son Christopher died after suffering a heart attack in 2018.
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Robert F. Kennedy
The son known familiarly to the whole country as Bobby Kennedy married Ethel Skakel on June 17, 1950.
They went on to have 11 children: Kathleen, Joseph II, Robert Jr., David, Courtney, Michael, Kerry, Christopher, Maxwell, Douglas and Rory.
Ethel was pregnant with Rory when Bobby was fatally shot on June 6, 1968, shortly after winning the California Democratic primary.
David Kennedy died of a drug overdose on April 25, 1984, at the age of 28. Michael Kennedy was killed on Dec. 31, 1997, when he slammed into a tree while on skis and simultaneously tossing a football around during a family trip to Aspen, Colo. The 37-year-old shared three children with wife Victoria Gifford.
Her husband died when their eldest child was only 16, but Ethel Kennedy went on to be a grandmother of 34. Two of her grandchildren have died: Courtney and husband Paul Hill's daughter Saoirse Hill, 22, in 2019 of an accidental drug overdose and Kathleen and husband David Townsend's daughter Maeve Kennedy McKean, 40, in a 2020 canoeing accident.
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Robert F. Kennedy Jr.
RFK Jr., born Jan. 17, 1954, is a thrice-married father of six.
He shares son Robert Francis "Bobby" Kennedy III (born 1984) and daughter Kathleen "Kick" Kennedy (born 1988) with first wife Emily Black.
They divorced in 1994 after 12 years of marriage.
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Robert F. Kennedy III
RFK III has been married to CIA analyst turned author and TV host Amaryllis Fox since 2017.
They share daughter Bobby (born Jan. 7, 2019) and son Cassius Watts Thoreau Kennedy (Aug. 30, 2021), as well as Amaryllis' daughter Zoë from a previous relationship.
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Kick Kennedy
"I like to say life is just a collection of experiences—some good, some bad—and the more you have the better," the Stanford grad told Town & Country in 2012.
And merely knowing Ben Affleck "in passing," as a source put it, brought Kick Kennedy to the top of the trending bar in August 2024 days after Jennifer Lopez filed for divorce from the actor.
Affleck's rep was quick to shut down romance speculation, telling E! News, "Everything about him and Kick is untrue."
So nothing about being a Kennedy had really changed in a decade. Or a century.
"People ask me, 'What's it like to be a Kennedy?'" she told T&C. "Maybe it's just the temperature of the water, but I'm just like, 'I have no idea.' When I see my face or name in the tabloids, I get a knot in my stomach. It's just not me—it's reading something that's not real."
But she did feel a kinship with the great aunt she was named for, who died two years before her father was born.
"It's funny how similar we are," Kick mused. "She was fun and social and a performer in many ways."
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RFK Jr. married Mary Richardson in 1994 and they went on to have four children: Conor Richardson Kennedy (born July 25 ,1994), Kyra LeMoyne Kennedy (Aug. 22, 1995), William Finbar "Finn" Kennedy (Nov. 8, 1997) and Aidan Caohman Vieques Kennedy (July 13, 2001).
The couple were legally separated when Mary died by suicide in 2012.
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Father and sons: Conor, Aidan and RFK III.
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Conor Kennedy
Conor has maintained a fairly low profile, high-profile activism and other exploits aside, since rocketing to fame as an 18-year-old Harvard student and happened to bring Taylor Swift home to meet the family.
Their romance only lasted a few months, and Conor went on to grow up and graduate from Georgetown Law School. But, the headlines were made.
"Taylor Swift's ex Conor Kennedy" is now engaged to singer Giulia Be.
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Kyra Kennedy
Kyra, a regular among the high-fashion set, lives in Milan.
She said in an Aug. 27, 2024, video posted in partnership with Elle and Bvlgari that she's working on a project in memory of her late mother.
"Have I experienced a rebirth in my life?" she asks in the clip. "Yes, I definitely have. As a little girl, I was one person. And when I became a young adult, I did a complete 180."
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RFK Jr. married Curb Your Enthusiasm star Cheryl Hines in 2014.
The actress shares daughter Catherine Young (born March 8, 2004) with ex-husband Paul Young.
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In wishing her dad a happy Father's Day in 2018, Kick wrote on Instagram, "Thanks for giving me all these wacky brothers and sisters!"
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Kerry Kennedy
Ethel and RFK's seventh child shares three daughters—twins Mariah Kennedy-Cuomo and Cara Kennedy Cuomo (born in 1995) and Michaela Kennedy-Cuomo (born in 1997)—with ex-husband Andrew Cuomo.
Kerry and Andrew, who was governor of New York from 2011 to 2021, married in 1990 and separated in 2003 before divorcing in 2005.
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Jean Kennedy Smith
Born Feb. 20, 1928, the eighth of Joe and Rose's nine kids, Jean founded the VSA Kennedy Arts Center and served as U.S. Ambassador to Ireland during the Clinton administration.
She married Stephen Edward Smith, a strategist on JFK's presidential campaign, on May 19, 1956. They shared sons Stephen Smith Jr. and William Smith and daughters Amanda Smith and Kym Smith.
Jean died June 17, 2020, having outlived all of her siblings.
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Edward "Ted" Kennedy
Sen. Ted Kennedy, more scandalous than 90 percent of his family put together, shared three children with first wife Joan Bennett: Kara Kennedy (born Feb. 27, 1960), Edward Kennedy Jr. (Sept. 26, 1961) and Patrick Kennedy II (July 14, 1967).
He and Joan divorced in 1982 after 24 years of marriage and he wed Victoria Reggie in 1992.
Kara suffered a fatal heart attack on Sept. 16, 2011, two years after her father died. Joan died on Oct. 8, 2025.
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