Image Credit: Getty Images Brandon Blackstock made headlines for his marriage and eventual divorce from his ex-wife Kelly Clarkson. But most recently, Brandon's death has surmounted previous coverage after it was revealed that he died of cancer. His illness led to Kelly postponing her Las Vegas residency shows in August 2025 in order to support her and Brandon's children. Below, Hollywood Life is remembering Brandon's life and career and explaining his death. Brandon Blackstock Was a Talent Manager Brandon came from a family with a showbusiness background, so he became a talent manager.