Less than a day after Kelly Clarkson postponed her shows in Las Vegas to be with family, it was announced that her ex-husband, Brandon Blackstock, had died. He was 48 years old and had been in a battle with cancer for over three years.br br Blackstock, who was a talent manager and managed Clarkson from 2017 to 2020, died “peacefully” and “surrounded by family,” according to a statement released to Deadline by a representative for his family.