Blackstock’s partner, Brittney Marie Jones, who used to be his ex-wife Kelly Clarkson’s assistant, was allegedly at the service. It is unclear if Clarkson was in attendance. “Brittney, his family and his closest friends spent time at his home sharing memories of Brandon and remembering how much he meant to them,” the insider said.

Brandon Blackstock had been dating Brittney Marie Jones in the years preceding his death. “Brandon and Brittney were in a relationship, and his family was very happy and supportive,” a source exclusively told Us Weekly in August.

According to two insiders, the music executive and the "Since U Been Gone" singer were divorced "long before" his relationship with the former assistant began.