The Royal Marriage at Berlin: The Empress Frederick and Prince and Princess Frederick Charles of Hesse. 4 February 1893 The Princess Victoria, Princess Royal (Victoria Adelaide Mary Louise; 21 November 1840 ?5 August 1901) was the eldest daughter of Queen Victoria and her consort Albert. She was created Princess Royal of the United Kingdom in 1841. She became Empress consort in Germany and Queen of Prussia by marriage to German Emperor Frederick III. After the death of her husband, she became widely known as Empress Frederick (or, in German: "Kaiserin Friedrich"). Princess Margaret Beatrice Feodora of Prussia (April 22, 1872 - January 22, 1954) was the daughter of the future Frederick III, German Emperor (1831-1888) and his wife, Princess Victoria of the United Kingdom (1840-1901), daughter of Queen Victoria. On January 25, 1893 Mossy married Prince Frederick Charles of Hesse ('Fischy'), future head of the Hesse-Cassel dynasty and future elected king of Finland. He was a relative of hers, his mother