Gagern, Hans Christopher Ernst, Baron Von (1766-1852), a German statesman and writer, was born near Worms, he was educated at Leipzig and Gottingen, and entered the service of the Prince of Orange-Nassau. He was ambassador to Paris till a decree of Napoleon made it impossible for him to hold the post longer. He then went to Vienna, and tried to rouse a movement against Napoleon in the Tyrol. He was, after the fall of Napoleon, Prime Minister to the King of the Netherlands (Prince of Orange), and represented him ably at the Congress of Vienna in 1815. From 1816-18 he was the Netherlands ambassador to Germany, and in 1820 he retired upon a pension, but still exerted a good deal of influence upon public affairs.