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,

The death of talent manager and producer Brandon Blackstock, Kelly Clarkson's ex-husband, is shining a spotlight on melanoma, the type of skin cancer he had.

Brandon Blackstock is remembered as a "devoted father" whose four kids will "always be his greatest love" in his obituary. The talent manager is dad to daughters River and Savannah and sons Remington and Seth.