Johann Weikhard of Auersperg
Prince Johann Weikhard of Auersperg (also spelled Johann Weichard von Auersperg; 11 March 1615 at Žužemberk Castle – 11 November 1677 in Ljubljana) was Prime Minister of Austria and Knight of the Order of the Golden Fleece. He was the first Prince of Auersperg, and also Imperial Prince of Tengen and Duke of Münsterberg. Life 

He was a descendant of the elder line of the Auersperg family from Carniola. His parents were Dietrich II of Auersperg and Sidonia Gall von Gallenstein. Johann Weikhard held several positions at the Austrian court. From 1640, he was Obersthofmeister (Lord Chamberlain) and teacher of Ferdinand IV, who was King of the Romans at the time. In 1641 he was sent to The Hague and later he took part in peace negotiations at Osnabrück, which ultimately ended the Thirty Years’ War with the Peace of Westphalia (1648). In 1653, Emperor Ferdinand III raised him to Imperial Prince and in 1654, in his capacity as King of Bohemia, enfeofed him with the Duchy of Münsterberg and the City of Frankenstein. He then styled himself Duke of Münsterberg. He held great political influence during the first decade of the rule of Emperor Leopold I. As prime minister of Austria (1665-1669), he concluded a secret treaty with France on 19 January 1668 about the division of the Spanish monarchy and worked towards a Catholic triple alliance between Austria, France and Spain. He was, however, suspected of having had secret talks with King Louis XIV of France, who was alleged to have promised him a post as Cardinal and was suddenly relieved of his duties on 10 December 1669 and banished from the court. He was sentenced to death, however, this sentence was never effectuated. He lived the rest of his life on his estates in Carniola. In 1673, he inherited the Lordships of Gottschee and Žužemberk from his elder brother Wolf Engelbrecht, Count of Auersperg. Marriage 
Johann Weikhard married Countess Marie Katharine of Losenstein (1635–1691). They had three sons and five daughters. He was succeeded as Duke of Münsterberg by his sons Johann Ferdinand and Franz Karl. References 
 
 Grete Mecenseffy: Im Dienste dreier Habsburger. Leben und Wirken des Fürsten Johann Weikhard Auersperg (1615–1677). in: Archiv für österreichische Geschichte, vol. 114, 1938, p. 295–509. Footnotes 

1615 births
1677 deaths
House of Auersperg
Johann
Austrian nobility
17th-century Austrian people
Carniolan nobility
People from the Municipality of Žužemberk
Obersthofmeister