Kelly Clarkson has claimed her estranged husband Brandon Blackstock and his management company, Starstruck Management, defrauded her and never had a license to act as her manager. Allegations: Kelly Clarkson has claimed her ex-husband Brandon Blackstock and his management company, Starstruck Management, defrauded her and never had a license to act as her manager Clarkson's father-in-law Narvel Blackstock, who owns …