Brandon Blackstock, the longtime music manager and former husband of Kelly Clarkson, has died at 48 following a three-year battle with cancer.It is with great sadness that we share the news that Brandon Blackstock has passed away, a rep told People. Brandon bravely battled cancer for more than three years. He passed away peacefully and was surrounded by family. We thank you for your thoughts and prayers and ask everyone to respect the familys privacy during this very difficult time.News of Blackstocks death follows Clarksons decision to postpone her August Studio Sessions in Las Vegas to focus on her children.While I normally keep my personal life private, this past year, my childrens father has been ill and at this moment I need to be fully present for them, she wrote.I am sincerely sorry to everyone who bought tickets to the shows and I so appreciate your grace, kindness and understanding.The Since U Been Gone singer met Blackstock at the 2006 Academy of Country Music Awards, and the two married in 2013. At the time, Blackstock was managing Blake Shelton and later took on Clarkson as a client. The couple filed for divorce in 2020, and it was finalized in 2022.They shared two children together, River, 10, and Remington, 8. Blackstock also had two older children, Savannah and Seth, from a previous marriage. He was the former stepson of country music legend Reba McEntire.Our hearts are with Clarkson and their families.Source