"Anne Abel Smith, a cousin of Queen Elizabeth II, marries Scottish politician David Liddell-Grainger at St George's Chapel, Windsor, 14th December 1957. Princesses Beatrix and Irene of the Netherlands and Princess Christina of Sweden are among the bridesmaids". (Photo by Ron Burton/Keystone/Hulton Archive/Getty Images)[1]
National Archives, Records created or inherited by the Home Office, Ministry of Home Security, and related bodies, Division within HO - Constitutional and Royal Departments, HO 124 - Home Office: Warrants for Royal Marriages [2]