Charles XIII of Sweden
Due to the refusal of Norway to subordinate itself to the Swedish king, Charles XIII of Sweden did not hand over Swedish Pomerania to Frederick VI of Denmark. The problem was solved at the Congress of Vienna, when the Great Powers followed a plan worked out by Karl August von Hardenberg, prime minister of the Kingdom of Prussia, who proposed a ring exchange of territories and payments between the Kingdom of Denmark, the Kingdom of Hanover (ruled in personal union with Great Britain and Ireland), the Kingdom of Prussia and the Kingdom of Sweden.