"Archduchess Mathilde of Austria (Mathilde Marie Adelgunde Alexandra; 25 January 1849, in Vienna – 6 June 1867, in Schloss Hetzendorf near Vienna) was an Austrian noblewoman. ...
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She was the second daughter of Archduke Albert, Duke of Teschen and Princess Hildegard of Bavaria (1825–1864)." - (en.wikipedia.org 14.03.2020)