Prince Clemens Lothar Wenzel Metternich was an Austrian statesman. At the age of 28 he was Austrian minister at Dresden, two years later at Berlin and in 1805 in Paris. In 1807 he concluded the treaty at Fountainebleau and in 1809 he was appointed Austrian foreign minister and negotiated the marriage between Napoleon and Marie Louise. He took a very prominent part in the congress of Vienna, rearranging a German federation.