Prince Bernhard was born on 25 December 1969 in Nijmegen in the Netherlands. He is the second son of Princess Margriet and Pieter van Vollenhoven. He has three brothers: Princes Maurits, Pieter-Christiaan, and Floris.
The House of Orange-Nassau (Dutch: Huis van Oranje-Nassau, pronounced [ˈɦœys fɑn oːˌrɑɲə ˈnɑsʌu]) is the current reigning house of the Netherlands.A branch of the European House of Nassau, the house has played a central role in the politics and government of the Netherlands and Europe especially since William the Silent organised the Dutch Revolt against Spanish rule, which after ...
Miss Felicia van Lippe-Biesterfeld van Vollenhoven; HH Prince Bernhard of Orange-Nassau, van Vollenhoven; HH Princess Annette of Orange-Nassau, van Vollenhoven-Sekrève. Miss Isabella van Vollenhoven; Mr Samuel van Vollenhoven; Mr Benjamin van Vollenhoven; HH Prince Pieter-Christiaan of Orange-Nassau, van Vollenhoven
From birth, Willem-Alexander has held the titles Prince of the Netherlands (Dutch: Prins der Nederlanden), Prince of Orange-Nassau (Dutch: Prins van Oranje-Nassau), and Jonkheer of Amsberg (Dutch: Jonkheer van Amsberg). He was baptised as a member of the Dutch Reformed Church on 2 September 1967 in Saint Jacob's Church in The Hague.
Princess Irene of the Netherlands (Irene Emma Elisabeth; born 5 August 1939) is the second child of Queen Juliana of the Netherlands and Prince Bernhard.. In 1964, she converted to Catholicism and married the then-Prince Carlos Hugo of Bourbon-Parma in a Catholic ceremony in Rome, thus forfeiting her place in the royal succession.
Juliana's full title and style as an unmarried woman was: Her Royal Highness Princess Juliana Louisa Emma Marie Wilhelmina of the Netherlands, Princess of Orange-Nassau, Duchess of Mecklenburg, etc. Her mother issued a decree allowing her to adopt her husband's princely title as customary, providing that it be preceded by the title she held as a member of the House of Mecklenburg . 
Laurentien was not legally created a princess, but custom allows a wife to use her husband's titles. All children of the marriage hold the titles Count or Countess of Orange-Nassau and Jonkheer or Jonkvrouw van Amsberg. By Royal Decree of 15 January 2003, nr. 36, Princess Laurentien was granted her own personal standard. Honours