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Blood feuds: When the family business goes horribly wrong

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Don Arden and Sharon Osbourne

Don Arden was a British music impresario who managed Black Sabbath and Electric Light Orchestra, two of the most popular rock bands of the 1970s. Singer Ozzy Osbourne left Black Sabbath in 1979, but Arden continued to run the band while also signing the newly solo vocalist to his label, Jet Records. Arden's daughter, Sharon, had been working for her father, but by 1982 she was both wife and manager to the ascendant singer.

Things went sour when Sharon Osbourne tried to break Ozzy's contract with Jet and sign him to a different label. Arden sued her in a case eventually settled out of court. He walked away with $1 million, but the legal action damaged his relationship with his daughter so severely that the two didn't speak for almost 20 years. Arden died in 2007.

Frederick R. Bunt | Evening Standard | Getty Images and Facebook