India, Aug. 8 -- Brandon Blackstock, singer Kelly Clarkson's ex-husband and famous talent manager, has died after battling cancer, his family revealed. He was 48. Soon after the news broke, fans dug up details about Clarkson and Blackstock's divorce, including hefty alimony and a child custody battle.

"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. We thank you for your thoughts and prayers and ask everyone to respect the family's privacy during this very difficult time," a rep for the family tells PEOPLE in a statement.

Blackstock is survived by his sons Seth and Remington, daughter...