Watch: Jack Schlossberg Supports Sister Tatiana Schlossberg After Terminal Cancer DiagnosisMaria Shriver is commending Tatiana Schlossberg for her bravery. The I've Been Thinking... author shared some kind words for her cousin Caroline Kennedy's daughter after the 35-year-old wrote a moving piece for The New Yorker in which she revealed that she'd been diagnosed with acute myeloid leukemia, a rare blood cancer, with doctors giving her a terminal prognosis. "Caroline shared the piece with family and friends yesterday and said that, despite the fact that Tatiana is battling a terminal illness, she and her family remain so grateful this holiday for her bravery and her presence at their dinner table," Maria wrote in her Sunday Paper newsletter Nov. 23. "Her honest, moving, and heartbreaking story will take your breath away." "I'm super proud of Tatiana for sharing her story and for writing this article," she continued. "Her words are strong, bold, brave, and true. Every single one. I'm also proud of her for deciding to share what all of this has been like for her extraordinary husband, George, her amazing parents, and their supportive family." The 70-year-old continued by sharing her hope that Tatiana is celebrated for sharing her story.readJack Schlossberg Supports Sister Tatiana Schlossberg After Terminal Cancer Diagnosis"I hope Tatiana and her story are met with love and grace," she wrote. "I hope her mother is as well. What a hero and an inspiration she continues to be. She is someone who finds gratitude every single day, and she never ceases to impress me." The journalist finished her note by sharing a recent memory of her time with her family, which she found to be a source of immense perspective during such a challenging time.

Craig Barritt/Getty Images for New York Magazine"When I was in New York City just two weeks ago, we all sat around the kitchen table trading stories and laughing as if life were normal," Maria recalled. "Then, as I walked back to my place that night, I thought to myself about how many families are dealing with this sort of struggle and tragic diagnosis." "I also thought about how many people are fighting tough battles," she added, "that they either keep private or that aren't visible to the eye. That is why it's so important for all of us to offer grace to one another. We never know what someone's going through. The world may be harsh, but we don't have to be. We can exemplify what the world needs more of: grace, light, compassion, and kindness." Maria's daughter Katherine Schwarzenegger also lauded Tatiana after her essay was published, saying that it had already been "shared by many and should be read by all."Instagram/Katherine Schwarzenegger"I have only tears and anger reading that this is her reality," she wrote on Instagram Nov. 23. "She has lived this experience with so much grace and I am in awe of her as a human, mother, wife, daughter, writer and fighter." "I am and continue to be grateful for all the doctors and nurses helping her," Katherine went on, "and encourage you to read her words about how the state of the country, the cuts and uncertainty, impacts and terrifies those in medicine and receiving treatment like Tatiana has been over the past year and a half, and continues to receive. Praying for and loving her and her family."Keep reading for more on the extended Kennedy family tree...

Everett/ShutterstockJoseph P. Kennedy and Rose KennedyJoseph Patrick "Joe" Kennedy married Rose Elizabeth Fitzgerald on Oct. 7, 1914.

Bachrach/Getty ImagesBy 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.

Keystone-France/Gamma-Keystone via Getty ImagesJoseph 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.

Mikki Ansin/Getty ImagesJohn F. KennedyIt 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/