Ferdinand I of Bulgaria Bulgarian ruler (1861–1948) (1861–1948) Parents Clémentine of Orléans, Princess of Koháry Prince August, 3rd Prince of Koháry Children Princess Nadejda of Bulgaria Kiril, Prince of Preslav Boris III of Bulgaria Princess Eudoxia of Bulgaria Siblings Prince Philipp, 4th Prince of Koháry Princess Amalie of Saxe-Coburg and Gotha-Koháry Prince Ludwig August of Saxe-Coburg-Kohary Archduchess Clotilde, Archduchess Joseph Karl of Austria Partners Princess Marie Louise of Bourbon-Parma Alžbeta Brezáková Queen Eleonore of Bulgaria
