Princess Helena Victoria of Schleswig-Holstein Princess Helena Victoria of Schleswig-Holstein Princess Helena Victoria of Schleswig-Holstein (Victoria Louise Sophia Augusta Amelia Helena; 3 May 1870 – 13 March 1948) was a granddaughter of Queen Victoria of the United Kingdom. Princess Helena Victoria (always known to her family as "Thora") was born at Frogmore House, near Windsor Castle. Her father was Prince Christian of Schleswig-Holstein, the third son of Christian, Duke of Augustenburg and Countess Louise af Danneskjold-Samsøe. Her mother was Princess Helena, the fifth child and third daughter of Queen Victoria and Prince Albert of Saxe-Coburg and Gotha. Her parents resided in Britain from marriage. She
Princess Beatrice of the United Kingdom from among her nieces: Princesses Louise (18), Victoria and Maud of Wales; Princesses Irene and Alix of Hesse and by Rhine; Princesses Marie, Victoria Melita and Alexandra of Edinburgh; and Princesses Helena Victoria and Marie Louise of Schleswig-Holstein. The bridegroom's supporters were his brothers, Prince Alexander of Bulgaria and Prince Francis Joseph of Battenberg. The ceremony – which was not attended by her eldest sister and brother-in-law, the Crown Prince and Princess of Prussia, who were detained in Germany; William Ewart Gladstone; or Beatrice's cousin, Princess Mary Adelaide, Duchess of Teck, who was in mourning for her father-in-law – ended