There were enough royals anyway and all of them had a relation to the late Queen Anne:
Archduke Lorenz of Austria-Este, Prince-Royal of Hungary, Prince of Belgium, head of the House of Austria-Este (also representing of the King of the Belgians). His grandmother was Empress Zita, born a Princess de Bourbon de Parme.
Archduke Carl Christian and Archduchess Marie-Astrid of Austria-Lorraine née Princess of Luxembourg, Princess of Nassau, Princess de Bourbon de Parme (also representing the Grand-Duke of Luxembourg)
Prince Carlos de Bourbon de Parme, Duke of Parma and Piacenza, head of the House of Bourbon-Parma (also on behalf of the King of the Netherlands)
Maria Vladimirovna Romanova, Grand-Duchess of Russia, head of the House of Russia. She was married to Prince Franz-Wilhelm of Prussia, from the House of Hohenzollern (the same ancestral House as Romania).
Prince Georg Friedrich of Prussia, head of the House of Prussia. He comes from the House of Hohenzollern (the same ancestral House as Romania).
Prince Maximilian of Baden, Margrave of Baden, head of the House of Baden. His mother was a sister to Prince Philip, the Duke of Edinburgh.
Duke Eberhard of Württemberg. His mother is born a Princess of Orléans, related to the deceased Queen Anne.
Archduke Martin of Austria-Este, Prince-Royal of Hungary. His grandmother was Empress Zita, born a Princess de Bourbon de Parme.
Archduke Martin of Austria, Prince of Tuscany. His mother was Princess Ileana of Romania.
Archduchess Maria Magdalena of Austria, Princess of Tuscany, Freifrau von Holzhausen and her huband Hans Freiherr von Holzhausen. The mother of the Archducess was Princess Ileana of Romania.
Princess Eleonore of Schaumburg-Lippe. She seems close to King Michael and the late Queen Anne and also lives and works in Romania.
Duchess Anita von Hohenberg, Countess de Bardeau and her husband Count Andreas de Bardeau. The mother of the Duchess was Princess Elisabeth of Luxembourg, Princess of Nassau, Princess de Bourbon de Parme.
Princess Anne de Ligne. Her mother was Princess Alix of Luxembourg, Princess of Nassau, Princess de Bourbon de Parme.
Princess Tatiana Radziwill, Madame Fruchaud and her husband Jean Henri Fruchaud. A niece to the father of Prince Philip, Due of Edinburgh and to Princess Françoise of Orléans (related to the late Queen).