George Clooney Mourns Sister Ada Zeidler, 65, After Cancer Battle

• George Clooney's elder sister, Adelia "Ada" Zeidler, passed away at 65 on December 19, 2025.
• She succumbed to a prolonged battle with cancer at St. Elizabeth Healthcare in Edgewood, Kentucky.
• Ada was an elementary art teacher, daughter of Nick Clooney, and maintained a low public profile.
• George Clooney praised her courage, calling her "my hero" and expressing deep sorrow.
• She was married to Norman Zeidler (predeceased) and had two children, Nicholas and Allison.

Why It Matters: George Clooney's sister, Ada Zeidler, died at 65 after a brave cancer fight; Clooney mourns his "hero."