Don Arden (born Harry Levy, 4 January 1926, Manchester, England – died 21 July 2007, Los Angeles) was an English music manager, agent and businessman, best known for overseeing the careers of rock groups Small Faces, Electric Light Orchestra and Black Sabbath. He achieved notoriety in England for his aggressive, sometimes illegal business tactics which led to him being called "Mr Big", "The English Godfather" and "The Al Capone of Pop". He was the father of Sharon Osbourne (father-in-law of Ozzy Osbourne) and David Levy, by his wife, Hope Shaw, a former ballet dancer/teacher, who predeceased him, dying in 1998. Arden's success story turned sour when his violent 'negotiating' methods and questionable accounting caught up with him, and he became estranged from members of his own family. (via Wikipedia)