In a remarkable turn of events in early 19th century Europe, Jean-Baptiste Bernadotte, a French Marshal who served under Napoleon Bonaparte, was elected as Crown Prince of Sweden by the Swedish Riksdag of the Estates. This decision was largely influenced by Sweden’s need for a new royal successor after King Charles XIII's lineage failed to provide an heir. The Riksdag consisted of various representatives from the country’s estates, which included nobility, clergy, townsfolk, and peasants, making the event a significant moment of political maneuvering for the future of Sweden.

Bernadotte, born in France, rose to prominence in the military through his skill and strategic prowess. His election was unconventional, as the Swedish crown was traditionally passed through the royal family. However, the political landscape was shifting, and Sweden required leadership that could navigate the turbulent European political environment of the time. Bernadotte’s acceptance of the crown prince position signified a blend of French and Swedish interests, reflecting a new era in Swedish politics.

The implications of Bernadotte’s election were vast. He adopted the name Charles John (Karl Johan) when he ascended to the Swedish throne after Charles XIII's death in 1818. His rule is often credited with modernizing Sweden and promoting neutrality in international conflicts, particularly during the Napoleonic Wars. As a result, the influence of French customs in Swedish society increased, while also marking a divergence from traditional monarchical succession practices, establishing a new path for the Swedish monarchy and national identity.