Nathaniel Rothschild was born in Canada. As the heir apparent to the centuries-old European banking dynasty, 40-year-old Nathaniel Rothschild (he prefers Nat) is building on his inheritance with canny investments in commodities, including a stake in Indonesia's largest coal producer, Bumi. Rothschild has also teamed up with ex-BP boss Tony Hayward on Vallares, an oil investment vehicle they merged with Turkish giant Genel in 2011. The Eton and Oxford graduate is well-connected: he's close with Russian billionaire Oleg Deripaska, once acting as an adviser and a cornerstone investor when his metals company Rusal floated. Other prudent investments include a stake in Glencore, the billionaire-backed commodities titan. Nat's known for his love of the finer things in life, and spends much of his time at his home base in the affluent ski resort town of Klosters, Switzerland. His 40th birthday party in Montenegro last July drew celebrities, socialites and billionaires alike -- as well as a slew of press coverage. As a scion of one of the world's wealthiest families, he can expect more attention to come. In January, he launched a libel suit against the UK's Daily Mail for suggesting that he used his connection to Deripaska to set up £500 million deal with former EU trade commissioner Peter Mandelson while they were all in a sauna together.