Watch: Brandon Blackstock, Kelly Clarkson's Ex-Husband, Dead at 48During their seven-year marriage, piece by piece, Brandon Blackstock gave Kelly Clarkson the stability she craved as a kid.And though they ultimately split in 2020-finalizing their divorce two years later-the couple remained dedicated to coparenting their kids River Rose, 11, and Remington "Remy" Alexander, 9, up until the talent manager's death.