 Later, in April, they were joined by their children Pilar, Juan Carlos (the future King Juan Carlos of Spain), Margarita and Alfonso.Calouste Gulbenkian, the Armenian oil magnate known as "Mr. Five Percent", also chose Portugal as a place to settle.In an operation organised by Caritas Portugal from 1947 to 1952, 5,500 Austrian children, most of them orphans, were transported by train from Vienna to Lisbon and then placed in the foster care of Portuguese families.