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Archduke Rainer of Austria (1827-1913) popular member of the imperial family; Patron of art and science and the Supreme Commander of the Imperial Landwehr. About 1870. Photograph by Adèle. Vienna [Graben 19 Hotel Müller and Prater Strasse 18 Hotel de l'Europe] (Photo by Austrian Archives/Imagno/Getty Images)

Archduke Rainer of Austria (1827-1913) popular member of the imperial family; Patron of art and science and the Supreme Commander of the Imperial Landwehr. About 1870. Photograph by Adèle. Vienna [Graben 19 Hotel Müller and Prater Strasse 18 Hotel de l'Europe] (Photo by Austrian Archives/Imagno/Getty Images)