Answer
The answer to the question is David Geffen, a renowned music executive and philanthropist who holds significant influence in the entertainment industry. David Geffen's association stems from his involvement with'Artforum' magazine, a reputable journal that showcased Shelley's artwork and gained prominence under Geffen's ownership during the 1970s. Geffen's influence was instrumental in shaping the magazine's direction and elevating Shelley's art to a wider audience.