Brandon Blackstock's death certificate has been issued after he died on Aug. 7 at his home in Butte, Montana. The talent manager and former husband of Kelly Clarkson died of malignant melanoma, a form of skin cancer,

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.

Brittney worked as an assistant to both Brandon and Kelly during their marriage. Learn more about Brandon's girlfriend here.

The late music manager and ex-husband of Kelly Clarkson leaves behind a blended family that includes four children and two grandchildren (with another one on the way).

Teddi Mellencamp reacted to Brandon Blackstock’s death and said it “really hit me hard” amid her own journey with melanoma. Blackstock’s death from melanoma comes four months after Mellencamp confirmed she had been diagnosed with stage 4 cancer.

“On May 29, 1999, I married the man who would become the father of my children. Brandon was full of charm, wit, and just an absolute gentleman who happened to wear cowboy boots, wrangler jeans, and a cowboy hat,” she wrote.