Frederick William III of Prussia

Frederick William III (German: Friedrich Wilhelm III) (3 August 1770 – 7 June 1840) was king of Prussia from 1797 to 1840. He ruled Prussia during the difficult times of the Napoleonic Wars and the end of the old German Empire. Steering a careful course between France and her enemies, after a major military defeat in 1806, he eventually and reluctantly joined the coalition against Napoleon in the Befreiungskriege. Following Napoleon's defeat he was King of Prussia during the Congress of Vienna which assembled to settle the political questions arising from the new, post-Napoleonic order in Europe.

• http://en.wikipedia.org/wiki/Frederick William III of Prussia