Kelly Clarkson abruptly cancelled her Las Vegas shows, announcing that her ex-husband, Brandon Blackstock, was ill. Then, came the tragic news that Blackstock was dead at the age of 48. What was his cause of death?

Brandon Blackstock, a talent manager and former husband of singer Kelly Clarkson, has died following a battle with cancer. He was 48.

Brandon Blackstock, whose marriage to and contentious split from Kelly Clarkson put him in the celebrity spotlight, has died of cancer at age 48.