Rudolf Hieronymus Eusebius von Colloredo-Waldsee, born November 2, 1585 in České Budějovice, Kingdom of Bohemia (now in the Czech Republic), was a Bohemian nobleman and the brother of Hieronymus von Colloredo-Waldsee. A member of the Colloredo family, he distinguished himself in the Thirty Years' War, especially at the Battles of Mantua and Lützen. Emperor Ferdinand III appointed him to the Imperial Privy Council and named him a Field Marshal. Although unable to prevent Prague Castle from falling to Sweden's Hans Christoff von Königsmarck, Colloredo-Waldsee's bold defense of Prague's old town halted the Swedish invasion of Bohemia on July 26, 1648 and saved the Habsburg's ancestral lands in Austria. After the war, he built the Schönborn Palace in Prague home to the United States Embassy to the Czech Republic. He died in Prague on February 24, 1657.