Gerald Grosvenor, the 6th Duke of Westminster, is still 3rd on the Sunday Times Rich List, 330 years after his ancestor, Sir Thomas Grosvenor, sensibly married an heiress with 500 acres of land on what were then the outskirts of London. The vast property empire in what is now Mayfair and Belgravia is owned by trusts.
[ More Intelligent Life: Danger, Riches Ahead ]
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