Kelly Clarkson's ex-husband, Brandon Blackstock, died on Thursday, August 7. He was 48. "It is with great sadness that we share the news that Brandon Blackstock has passed away. Brandon bravely battled cancer for more than three years. He passed away peacefully and was surrounded by family," a rep for the family said in a statement to Us Weekly. "We thank you for your thoughts and prayers and ask everyone to respect the family's privacy during this very difficult time.