Gustaf Douglas

Gustaf Douglas was born into nobility, but without exceptional riches.

The Harvard graduate eventually ran state-owned TV channel SVT2 and newspaper Dagens Nyheter.

In 1985 Douglas acquired a controlling stake in Swedish security firm Securitas, eventually turning into a global powerhouse.

Today, his sons, Carl and Eric, sit on the board of both Investment AB Latour. They are also billionaires.

Douglas and his family control Investment AB Latour, which has a large stake in the world's biggest lock producer, Assa Abloy.