In what War did the father of Princess Christina Margarethe of Hesse die?
Princess Christina Margarethe of Hesse Princess Christina Margarethe of Hesse (German: "Prinzessin Christina Margarethe von Hessen" ; 10 January 1933 – 22 November 2011) was the eldest daughter of Prince Christoph of Hesse and Princess Sophie of Greece and Denmark. From 1956 to 1962, she was married to Prince Andrew of Yugoslavia, with whom she had two children. Her second marriage to Robert Floris van Eyck, a Dutch artist based in London, lasted from 1962 to 1986.
William, Prince of Orange William, Prince of Orange (Willem Nicolaas Alexander Frederik Karel Hendrik; 4 September 1840 – 11 June 1879), was heir apparent to the Dutch throne as the eldest son of King William III from 17 March 1849 until his death.