Jack Osbourne's mum, Black Sabbath manager Sharon Osbourne, had a feared reputation in the music industry, but it pales into insignificance next to her dad’s. Some of the most feared gangsters in history include Pablo Escobar, Al Capone, Whitey Bulger, John Dillinger - and another is the rock ‘n’ roll manager and Jack's grandfather, Don Arden.

So feared was Ozzy Osbourne's father-in-law that he was given the nickname "the Al Capone of pop".

But who was the real Don Arden?

Don Arden was a British music manager and London-based agent, known for his aggressive business tactics and for managing the careers of major rock acts like Black Sabbath, Little Richard, Jerry Lee Lewis, Gene Vincent, Small Faces, The Move, and the Electric Light Orchestra.

Born Harry Levy, his ruthless methods earne

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