Today marks the centenary of the death of Princess Louise Margaret, Duchess of Connaught, who died on this day in 1917. Born Princess Louise Margaret of Prussia, she was a granddaughter of King Frederick William III of Prussia, and the product of an unhappy marriage. In 1879, she married Queen Victoria’s third son, Prince Arthur, Duke of Connaught and Strathearn. She spent the first 20 years of the marriage accompanying her husband on his various military assignments. The Duke and Duchess of Connaught had three children, Princess Margaret (later Crown Princess of Sweden), Prince Arthur (later Governor General of South Africa), and Princess Patricia (later Lady Patricia Ramsay), and were the Governor General and Viceregal Consort of Canada from 1911 to 1916. The Duchess of Connaught died on this day in 1917 of influenza and bronchitis at Clarence House (now home of the Prince of Wales) at the age of 56. The Duke died in 1942. Through their eldest daughter, the Duke and Duchess are the great grandparents of King Carl XVI Gustaf of Sweden, Queen Margrethe II of Denmark, and Queen Anne Marie of Greece. Click HERE to read about her Fringe Tiara.