You Won't Believe How Much the World's Richest Heirs and Heiresses are Worth

Katharine Rayner, $8 billion

Rayner is heir to the Cox Enterprises fortune, a huge multinational conglomerate. She was born in New York and shares her fortune with her sister Margaretta and brother James. She has been married twice, once to a magazine editor and once to a painter.

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The More You Know

  • The woolly mammoth survived until Egyptian times.
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