New Duke of Westminster Is Youngest on Billionaires List: Chart

He’s 25 years old and worth $12.3 billion dollars. Hugh Richard Louis Grosvenor, who became the 7th Duke of Westminster after the sudden death of his father Tuesday, has now become the youngest of the 400 richest people tracked by the Bloomberg Billionaires Index. Among the young and wealthy, Facebook Inc.’s Mark Zuckerberg is seven years older, and nearly five times as rich.

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