Ozzy Osbourne 's surviving children are at the center of an ongoing family riddle after two of his six children were left out of the family's official death tribute to the rocker, RadarOnline.com can reveal.

Osbourne, the Birmingham-born Black Sabbath frontman who died in July aged 76 after an agonizing Parkinson's battle, had long acknowledged the complex shape of his family life. Article continues below advertisement

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The rock wildman passed away at his home, and a statement released by relatives said he died "surrounded by love" ― naming his wife Sharon Osbourne , 73, and four of his children, Jack , 40, Kel

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