Article continues below advertisementAfter Brandon Blackstock passed away from cancer on Thursday, August 7, an insider confirmed "he was diagnosed after" his divorce from Kelly Clarkson was finalized.Blackstock died from melanoma skin cancer, which he battled for three years before dying at the age of 48.Article continues below advertisementKelly Clarkson and Brandon Blackstock Divorced in 2022Source: megaThe former couple's divorce was finalized in March 2022."Brandon bravely battled cancer for more than three years," his family wrote in a statement.