Brandon Blackstock's daughter, Savannah Blackstock Lee, wrote a touching tribute to her father on Tuesday. Brandon died on Aug. 7 at the age of 48 following a three-year battle with cancer.

An obituary for the late talent manager revealed that Blackstock was “building a life” with Clarkson’s former assistant, Brittney Marie Jones, as he lost his battle with cancer.

Brandon Blackstock's loved ones held a heartfelt celebration of life in Montana as they shared memories and honored his legacy

Blackstock passed away at the age of 48 after a three-year battle with cancer, with his obituary now revealing new details about his life.

Brandon's family has begun speaking out and sharing memories of the talent manager on social media following his passing. His brother, Shelby Blackstock, son of Reba McEntire and Narvel Blackstock, also remembered him in a post on Instagram, writing:

Kelly Clarkson's former husband Brandon Blackstock passed away at age 48 following a cancer battle, leaving behind a legacy as a music industry talent manager.

Brandon Blackstock suffered from seizures as he bravely battled cancer. Kelly Clarkson’s ex-husband passed away last week at age 48 after a private three-year fight with melanoma, a serious skin cancer, but his death certificate reveals even more about his health issues.

Kelly Clarkson’s ex-husband, Brandon Blackstock, tragically passed away last week at the age of 48 after a three year battle against cancer. The singer has rescheduled all her performing commitments to be there for the two children she shared with

Brandon Blackstock ‘s adult daughter, Savannah Blackstock Lee, 23, paid tribute to the late music manager on Tuesday (Aug. 19) in a loving Instagram post featuring photos of the father and daughter over the years.