When Princess Margaret of Connaught was 23 and her youngest sister Princess Patricia of Connaught was 18, both girls were among the most beautiful and eligible princesses in Europe. Their uncle, King Edward VII, wanted his nieces to marry a European king or crown prince. On January 1905, the Duke and Duchess of Connaught visited Portugal where they were received by Carlos of Portugal and Amélie of Orléans, whose sons Luís Filipe, Duke of Braganza, and Prince Manuel entertained the young English princesses. The Portuguese expected one of the Connaught princesses would become the future Queen of Portugal. Then the Connaughts visited Spain, where Patricia was expected to be King Alfonso XIII's future wife (later, Alfonso married another granddaughter of Queen Victoria, Princess Victoria Eugenie of Battenberg). But neither of these expectations would become true; Margaret and Patricia had other destinies.
The Connaughts continued their trip to Egypt and Sudan. In Cairo they met Prince Gustaf Adolf of Sweden, the future Gustav VI Adolf of Sweden, grandson of the Swedish King Oscar II. Gustaf and Margaret fell in love at first sight. Prince Gustaf proposed at a dinner held by Lord Cromer at the British Consulate in Egypt, and was accepted. Margaret had certainly fallen completely in love with Gustaf. Her parents were very happy with the match even though the Prince was ten months younger than his bride. Prince Gustaf was short of sight and used spectacles; he was "tall, dark, well informed, fond of music, an excellent shot and a good dancer". Gustaf and Margaret married on June 15, 1905 in St. George Chapel, at Windsor Castle.
She became the first wife of Prince Gustaf Adolf of Sweden on 15 June 1905. When Gustaf Adolf's father Gustav V acceeded to the throne as King in 1907, the couple became Crown Prince and Princess of Sweden. In Sweden she was known as Margareta (styled Her Royal Highness The Crown Princess of Sweden).
She is the grandmother of the current King of Sweden, Carl XVI Gustaf, as well as her namesake, the current Queen of Denmark, Margrethe II, and former Queen of Greece, Princess Anne-Marie of Denmark.
| Name | Birth | Death | Notes |
|---|---|---|---|
| Prince Gustav Adolf, Duke of Västerbotten | April 22 1906 | January 26 1947 | father of the present King Carl XVI Gustaf of Sweden |
| Prince Sigvard, Duke of Uppland | June 7 1907 | February 4 2002 | later Count Sigvard Bernadotte af Wisborg |
| Princess Ingrid | March 28 1910 | November 7 2000 | later Queen of Denmark; mother of the present Queen Margrethe II of Denmark and ex Queen Anne-Marie of Greece |
| Prince Bertil, Duke of Halland | February 28 1912 | January 5 1997 | married Lilian Davies; no issue |
| Prince Carl Johan, Duke of Dalarna | October 31 1916 | later Count Carl Johan, Bernadotte af Wisborg, married Countess Gunnila Wachtmeister af Johannishus, had adopted issue |