The Kingdom of Holland, The Kingdom of Holland was set up by Napoléon Bonaparte as a puppet kingdom for his third brother, Louis Bonaparte, in order to have better control the Netherlands. The name of the leading province, Holland, was now taken for the whole country. In 1807, East Frisia and Jever were added to the kingdom. The Duchy of Nassau was an independent state between 1806 and 1866, located in what is now the German states of Rhineland-Palatinate and Hesse. It was a member of the Confederation of the Rhine. The Duchy of Nassau was under Dutch control during the Napoleonic wars.