Agustín de Iturbide y Green was the adopted son of which Belgian princess?
Agustín de Iturbide y Green Don Agustín de Iturbide y Green, Prince of Iturbide (2 April 1863, in Mexico City, Mexico – 3 March 1925, in Washington, D.C.) was the grandson of Agustín de Iturbide, the first emperor of independent Mexico, and his consort Empress Ana María. He became the adopted son, along with his cousin Salvador de Itúrbide y de Marzán, of Mexico's only other royal heads of state—Emperor Maximilian I of Mexico and Empress Carlota of Mexico. After the death of Emperor Maximilian in 1867, he became the Head of the Imperial House of Mexico, but he had no children. His claims passed to Maria Josepha Sophia de Iturbide, the daughter of his cousin, Salvador.
Archduchess Karoline Marie of Austria Archduchess Karoline Marie of Austria (German: "Carolina Maria Immakulata Josepha Ferdinanda Therese Leopoldine Antoinette Franziska Isabella Luise Januaria Christine Benedikta Laurencia Justiniana, Erzherzogin von Österreich, Prinzessin von Toskana" ) (5 September 1869, Altmünster, Upper Austria, Austria–Hungary – 12 May 1945, Budapest, Hungary) was a member of the House of Habsburg-Tuscany and Archduchess of Austria, Princess of Tuscany by birth. Through her marriage to Prince August Leopold of Saxe-Coburg and Gotha, Karoline was also a member of the Koháry branch of the House of Saxe-Coburg and Gotha. Karoline was the fourth child and second eldest daughter of Archduke Karl Salvator of Austria and his wife Princess Maria Immaculata of Bourbon-Two Sicilies. She was Princess-Abbess of the Theresian Royal and Imperial Ladies Chapter of the Castle of Prague (1893-1894).