 Under the Act on the Membership of the Royal House (2002), Prince Friso lost the title 'Prince of the Netherlands' by entering into a marriage without an Act of Consent.By a royal decree of 19 March 2004, Prince Friso was granted the surname 'Van Oranje-Nassau van Amsberg', the hereditary noble predicate 'Jonkheer (Jonkvrouw) van Amsberg and the hereditary title 'Count of Orange-Nassau', to take effect upon his marriage.By the same decree, he was allowed to retain his title 'Prince of Orange-Nassau' as a personal and non-hereditary title and the style of 'Royal Highness'.