Tim Shriver Says Tatiana Schlossberg’s Husband Asked Family to Keep Her Memory Alive as He Shares Rare Kennedy Cousin Photo

Tatiana Schlossberg’s family is leaning on one another as they mourn her loss — and as they look for ways to carry her memory forward.

On Tuesday, Jan. 6 — a day after several members of the Kennedy family gathered at a New York City church to say goodbye to Tatiana, the daughter of Caroline Kennedy and Edwin Schlossberg — her cousin Tim Shriver shared a heartfelt tribute on X.

“Yesterday, we said goodbye to Tatiana,” Tim, 66, wrote. “Heartbreak doesn’t begin to capture the sadness we feel. Our hearts are with Caroline and Ed and George and Josie and Eddie and Rose and Jack.”

He continued, “She had so much more living to do. She was so smart and so funny, just like her mom. She was so thoughtful and so brilliant, just like her dad. She had faith in the sacredness of nature and in its maker too. She was willing to take on the great work of our time—telling the truth without fear.”

Tatiana — the middle child of Caroline and Ed — died on Dec. 30 at age 35. A month earlier, she publicly shared that she had been diagnosed with acute myeloid leukemia in a personal essay published by The New Yorker.

Doctors discovered the disease while she was hospitalized after giving birth to her second child, daughter Josephine. Tatiana and her husband, George Moran, also had a son, Edwin.

“There is no sense to be found in this suffering,” Tim wrote. “Only indescribable sadness and all of our faith.”

Tim also shared that Moran asked the family to honor Tatiana not only through remembrance, but through the way they live.

“Her husband George asked us all to be part of keeping her alive by being playful and doing crossword puzzles (in under 5 minutes), being the best friend in the world, listening with kindness, speaking with truth, laughing hysterically, and so much more,” he wrote.

“We promise to carry her with us into this new year and for the years to come,” Tim added. “And we invite you to join us in living each day with gratitude, love, a sense of humor, and action. We love you Tatiana.”

In addition to the tribute, Tim shared a rare family photo of Kennedy cousins with the handwritten caption, “For the beautiful Shrivers — from the more beautiful Schlossbergs.”

In the photo, Tatiana is smiling alongside her older sister, Rose, and younger brother, Jack. Embracing them are Tim’s five children: Sophia Rose, Timothy Jr., Samuel, Kathleen and Caroline.

Tatiana’s funeral took place at the Church of St. Ignatius Loyola on New York’s Upper East Side — the same venue where her grandmother Jackie Kennedy’s service was held 32 years earlier.

Details of the service were kept private, but the family’s public show of unity in supporting Caroline reflects a long-standing Kennedy pattern that has drawn public attention for decades.

“They understand the role they play in the popular imagination,” historian Steven M. Gillon told PEOPLE for an exclusive cover story. “They understand that people are curious about them and their family, and they’ve never shied away from holding public funerals.”

“They all recognize that as Kennedys, they have been given great privileges and that they owe something to the public and that they try to strike a balance between their privacy and their personal grief and their recognition of the role that they play in American public life,” added the author of JFK Jr. biography America’s Reluctant Prince.

Caroline, in particular, has endured repeated public grief — including the assassinations of her father, President John F. Kennedy, and her uncle Robert F. Kennedy; the death of her younger brother, John, in a fatal plane crash; and the loss of her mother, Jackie, to cancer.

“She has that strength of character,” Gillon noted. “And there’s something in the Kennedy genes, they know how to deal with pain and with grief.”