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Redstone Grandchild Plans to Take Legal Steps Against Shari

  • Keryn Redstone aims to work with Viacom directors in dispute
  • Former girlfriend Herzer seeks new trial in competency case
Sumner Redstone, left, with his daughter, Shari, in Beverly Hills, on Oct. 27, 2012.

Sumner Redstone, left, with his daughter, Shari, in Beverly Hills, on Oct. 27, 2012.

Photographer: Katy Winn/Katy Winn/Invision via AP Photo
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Keryn Redstone, granddaughter of Sumner Redstone, has retained the lawyer who represents the media billionaire’s former girlfriend and said she plans to work with Viacom Inc.’s directors in their legal battle for control of the media company.

The granddaughter is joining a legal fight that started with a dispute between the elder Redstone, 93, and his former girlfriend Manuela Herzer. It has since turned into a battle between the aging media mogul, his daughter Shari and members of Viacom’s board, including top management.