sister Mathilde. Otto and Maria had two sons: Charles I of Austria married Princess Zita of Bourbon-Parma and had issue. Archduke Maximilian Eugen of Austria married Princess Franziska von Hohenlohe-Waldenburg-Schillingsfürst and had issue. Their marriage was unhappy, and the Archduke was often unfaithful. He had illegitimate children including two by his mistress, Marie Schleinzer: Alfred Joseph von Hortenau, father of the actress Isabel del Puerto Hildegard von Hortenau Honours The mountain lodge Erzherzog-Otto-Schutzhaus on the Rax plateau in Lower Austria, is named after him. Decorations and awards Ancestry Footnotes House of Habsburg-Lorraine 1865 births 1906 deaths Deaths from syphilis Austrian princes Burials at the Imperial Crypt Knights of the Golden Fleece of Austria Grand Crosses of the Order of Saint Stephen of Hungary Knights of Malta Grand Crosses of the Order of the Star of Romania Recipients of the Order of St. Anna, 1st class Recipients of the Order of the White Eagle (Russia)