Skorpios, a private Ionian Sea island off Greece’s west coast, is among them. Once home to the late Greek shipping billionaire Aristotle Onassis, it’s where he and Jacqueline Kennedy Onassis ...

The sale of an idyllic Greek island owned for decades by the Onassis family has been thrown into doubt amid concerns that it contravenes the wishes of the late shipping tycoon Aristotle Onassis.