Archduchess Ilona of Austria Austrian Imperial and Royal (1927–2011) (1927–2011) Parents Princess Anna of Saxony Archduke Joseph Francis of Austria Children Duke Borwin, Duke of Mecklenburg Duchess Marie Katharina of Mecklenburg Duchess Irene of Mecklenburg Duchess Elisabeth Christina of Mecklenburg Siblings Archduke Joseph Árpád of Austria Archduke Géza of Austria Archduke Michael of Austria Archduchess Margarethe, Princess of Monteleone Archduchess Anna-Theresia of Austria Archduchess Maria Kynga of Austria Archduke István of Austria Partners Georg Alexander, Duke of Mecklenburg-Strelitz