Charles XIII of Sweden
The Treaty of Kiel was a 14 article document signed in January 1814 between Denmark, Norway, Sweden and the United Kingdom, ending the Napoleonic wars. Sweden and the United Kingdom, under the sixth coalition were united in battle against Denmark and Norway who was allied with France. Denmark, due to its defeat in the war and the ensuing Treaty of Kiel, were obligated to cede Heligoland to the United Kingdom.King Frederik VI Denmark's rule of the Kingdom of Norway was relinquished to King Charles XIII of Sweden, a great disappointment to King Frederik VI.