Image Credit: Getty Images Brandon Blackstock is making headlines as of late after his ex-wife Kelly Clarkson revealed that he was battling an illness. As a result of his ailment, she postponed her Las Vegas shows, and now, fans are curious about Brandon's family and inner circle. In fact, most want to know who his mom and dad are, and whether or not he's related to country music singer Reba McEntire. Below, Hollywood Life has a breakdown of Brandon's family tree and former marriages. (Photo by Steve Granitz/WireImage) Who Are Brandon Blackstock's Ex-Wives? Brandon has been married twice.