The family of Brandon Blackstock, Kelly Clarkson's ex-husband and the father of her two children, shared the tragic news that Blackstock has died at 48 from cancer.

Clarkson, the "American Idol" star who shared two children with Blackstock, had just announced she was stepping away from concerts to support her family.

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