Today marks the 40th Anniversary of the Wedding of the Prince of Wales and Lady Diana Spencer, who got married at St. Paul’s Cathedral on this day 40 years ago! Among the 3,500 guests at the ‘Wedding of the Century’ were dozens of Royal Guests, many of whom were related to the Prince, from around the world, which we are featuring today!

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Wedding of Prince of Wales and Lady Diana Spencer | Wedding Ball | Gala at Claridge’s Hotel | Film

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All the Royal Guests were led by the British Royal Family: the Prince of Wales’ parents, the Queen and Duke of Edinburgh; grandmother, the Queen Mother; sister and brother-in-law, Princess Anne and Mark Phillips; brothers, Prince Andrew (the best man) and Prince Edward; aunt, Princess Margaret; and cousins, Viscount Linley and Lady Sarah Armstrong-Jones, who was a bridesmaid.

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Extended members of the Royal Family included the Duke and Duchess of Gloucester with Princess Alice; the Duke and Duchess of Kent; Princess Alexandra of Kent and Sir Angus Ogilvy; Prince and Princess Michael of Kent; the Earl and Countess of Harewood; the Duke of Fife; Captain Alexander Ramsay of Mar and The Lady Saltoun; the Marchioness of Cambridge; Lady Mary and Mr Peter Whitley; the Duchess and Duke of Beaufort; Lady May and Colonel Sir Henry Abel Smith; Countess Mountbatten of Burma and Lord Brabourne; Lady Pamela and David Hicks; Lord and Lady Romsey; the Earl and Countess of Strathmore and Kinghorne; and the Hon. Margaret and Denys Rhodes.

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Foreign Royal Guests were led by:

• King Olav V of Norway (first cousin, twice removed) with Crown Prince Harald and Crown Princess Sonja (wearing Queen Alexandra’s Diamond Pendant)
• Queen Margrethe II (third cousin, once removed, wearing the Connaught Sapphire Brooch) and Prince Henrik of Denmark
• King Carl XVI Gustaf (third cousin, once removed) and Queen Silvia of Sweden
• Queen Beatrix and Prince Claus of the Netherlands
• King Baudouin (third cousin, once removed) and Queen Fabiola of Belgium
• Grand Duke Jean and Grand Duchess Joséphine Charlotte of Luxembourg (third cousin, wearing her Sapphire Necklace)

A notable absence was Queen Sofia of Spain (second cousin), who pulled out due to opposition over the newlywed Prince and Princess of Wales spending a portion of their honeymoon in Gibraltar

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Other Foreign Royal Guests included:

• King Constantine II of Greece (second cousin) with Crown Prince Pavlos, Princess Alexia, and Prince Nikolaos
• King Michael (second cousin) and Queen Anne of Romania (second cousin, once removed)
• Tsar Simeon II and Tsaritsa Margarita of Bulgaria
• The King and Queen of Tonga
• Queen ‘Mamohato Bereng Seeiso of Lesotho
• The Princess of Monaco with Hereditary Prince Albert
• The Prince and Princess of Liechtenstein with Hereditary Prince Hans Adam and Hereditary Princess Marie
• Crown Prince Akihito and Crown Princess Michiko of Japan
• Crown Prince Hassan and Crown Princess Sarvath of Jordan
• Prince Gyanendra and Princess Komal of Nepal
• Princess Maha Chakri Sirindhorn
• Prince Gabieni and Princess Lindiow of Swaziland

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Other extended members of the Prince of Wales’ family included:

• The Margrave and Margravine of Baden with Prince and Princess Ludwig of Baden and Princess Margarita (first cousins)
• Princess Sophie of Greece (aunt) and Prince George William of Hanover (uncle) with Prince and Princess Karl of Hesse and Prince Georg of Hanover (first cousins)
• The Prince and Princess of Hohenlohe-Langenburg with Princess Beatrix, and Prince and Princess Andreas (first cousins)
• The Princess of Hesse and by Rhine
• The Aga Khan IV and Begum Salimah Aga Khan
• Crown Prince Alexander (second cousin, once removed) and Princess Olga of Yugoslavia (first cousin, once removed)
• Prince George of Denmark (second cousin, once removed)