Media mogul Rupert Murdoch married for the fifth time on Saturday. The 93-year-old billionaire's wife Elena Zhukova is a retired molecular biologist who specialises in diabetes research. Originally from Moscow, 67-year-old Zhukova has a 42-year-old daughter with Russian oil billionaire Alexander Zhukov. She had met Murdoch during a family gathering organised by Murdoch's third ex-wife Wendi Deng.