Brandon Blackstock, the late ex-husband of singer Kelly Clarkson, was a father of four. The talent manager died on August 7 after a private cancer diagnosis. Blackstock was 48 years old. “It is with great sadness that we share the news that Brandon Blackstock has passed away,

The ‘American Idol’ alum shares two children with her late ex-husband, Brandon Blackstock, and has always made them her top priority.

Kelly Clarkson's "staying strong" but is "heartbroken" for her kids after ex Brandon Blackstock's death, a source tells PEOPLE. The singer and her late ex-husband share daughter River, 11, and son Remington,