Princess Edward of Saxe-Weimar, born Lady Augusta Katherine Gordon-Lennox, was born January 14, 1827 at Goodwood House, a daughter of Charles Gordon-Lennox, 5th Duke of Richmond, and his wife, born Lady Caroline Paget, a daughter of Henry Paget, 1st Marquess of Anglesey. Her father was descended in the direct patrilineal line from Charles Lennox, 1st Duke of Richmond, the illegitimate son of King Charles II of England by his mistress, Louise de Kérouaille, Duchess of Portsmouth.

Lady Augusta Katherine Gordon-Lennex was married, morganatically in London on November 27, 1851 to Prince Edward of Saxe-Weimar-Eisenach, a son of Prince Bernhard of Saxe-Weimar-Eisenach and his wife, born Princess Ida of Saxe-Meiningen, the sister of Adelaide, Queen Consort of King William IV of the United Kingdom. Lady Augusta was created Gräfin von Dornburg (Countess of Dornburg) the day before her wedding, by her future husband's uncle, Charles Frederick, Grand Duke of Saxe-Weimar-Eisenach. She and her husband were to have no children.

Queen Victoria granted her permission in 1885 to share her husband's princely title and thereafter she was known as Her Serene Highness Princess Edward of Saxe-Weimar, but only in Great Britain. She continued to be referred to as the Countess of Dornburg (Gräfin von Dornburg) in Germany. She died April 3, 1904 in London.

Princess Edward of Saxe-Weimar, born Lady Augusta Katherine Gordon-Lennox, was born January 14, 1827 at Goodwood House, a daughter of Charles Gordon-Lennox, 5th Duke of Richmond, and his wife, born Lady Caroline Paget, a daughter of Henry Paget, 1st Marquess of Anglesey. Her father was descended in the direct patrilineal line from Charles Lennox, 1st Duke of Richmond, the illegitimate son of King Charles II of England by his mistress, Louise de Kérouaille, Duchess of Portsmouth.

Lady Augusta Katherine Gordon-Lennex was married, morganatically in London on November 27, 1851 to Prince Edward of Saxe-Weimar-Eisenach, a son of Prince Bernhard of Saxe-Weimar-Eisenach and his wife, born Princess Ida of Saxe-Meiningen, the sister of Adelaide, Queen Consort of King William IV of the United Kingdom. Lady Augusta was created Gräfin von Dornburg (Countess of Dornburg) the day before her wedding, by her future husband's uncle, Charles Frederick, Grand Duke of Saxe-Weimar-Eisenach. She and her husband were to have no children.

Queen Victoria granted her permission in 1885 to share her husband's princely title and thereafter she was known as Her Serene Highness Princess Edward of Saxe-Weimar, but only in Great Britain. She continued to be referred to as the Countess of Dornburg (Gräfin von Dornburg) in Germany. She died April 3, 1904 in London.