George Clooney’s Sister Ada Zeidler Dies After Prolonged Cancer Illness At 65

George Clooney's older sister, Adelia "Ada" Zeidler, a beloved elementary art teacher from Augusta, Kentucky, passed away at age 65 after a courageous battle with cancer. Born in Los Angeles to journalist Nick Clooney and writer Nina Bruce Warren, Ada lived a quiet life dedicated to education and the arts, serving at Augusta Independent School. 

Named after her great-grandmother, she was a National Merit Scholar, avid reader, and Augusta Art Guild member. While her brother shone in Hollywood, Ada supported from afar, attending his 2014 Venice wedding to Amal. Her peaceful death at St. Elizabeth Healthcare, surrounded by loved ones, drew heartfelt tributes.

George Clooney's Sister Ada Zeidler’s Cause of Death

Reports state that Ada Zeidler died following a prolonged cancer illness. The exact type of cancer has not been publicly disclosed, and the family has not shared further medical details. This is common in such situations, as families often choose privacy when it comes to specific diagnoses and treatment histories.

Clooney told PEOPLE: "My sister, Ada, was my hero. She faced down cancer with courage and humour. I've never met anyone so brave. Amal and I will miss her terribly." Son Mike Norris echoed family grief, noting her as "the best, the greatest mom." No public funeral details beyond a December 22 service; memorials go to Knoedler Memorial Library. Ada's obituary highlights her love for family, leaving kids Nick and Allison, brother George, and extended kin.

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Who Was Ada Zeidler?

Ada Zeidler was George Clooney’s elder sister and preferred a life outside the glare of fame. Unlike her brother, she did not pursue a career in entertainment. Instead, she focused on family life and community work. Those who knew her describe her as grounded and deeply supportive of her family, including George, whose close bond with his siblings has often been mentioned in interviews over the years.

Her life reflected a different kind of strength. One rooted in consistency, care, and showing up for the people around her, even while managing her own health challenges.

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Conclusion

Ada Zeidler’s death after a prolonged cancer illness is a reminder of the quiet, personal battles many people fight away from public view. While she was known to many as George Clooney’s sister, her life stood on its own, marked by resilience, family bonds, and dignity in the face of illness. As the Clooney family grieves, her story also brings attention to the long and complex journey of living with cancer, one that affects not just patients but everyone who loves them.