King from 1818 to 1844. Motto: The love of the people my reward
Jean Baptiste Bernadotte was born in 1763 in the city of Pau in southwest France. His parents were Henri Bernadotte and Jeanne Saint Jean.
After working as an attorney's apprentice in Pau, he enlisted in 1780 with the Royal-la-Marine regiment and had reached the rank of Field Usher by the beginning of the French Revolution in 1789. Social barriers were broken down by the revolution, allowing the energetic and talented Jean Baptiste Bernadotte to progress quickly in his career. He distinguished himself as a General and an administrator on a number of occasions, and by 1794 he had advanced to the position of Divisional General. In 1798 he married Désirée Clary, and their only child – Oskar (I) – was born the following year.
In 1799, Bernadotte was appointed as France's Minister of War, and five years later as Marshal of France. In 1806, Emperor Napoleon I named him Sovereign Prince of Pontecorvo, and he was named successor to the Swedish throne by the Parliamentary Session in Örebro in 1810.
To compensate for the loss of Finland in 1809, Karl Johan pushed through the union between Sweden and Norway in 1814. After the death of King Karl XIII in 1818, he was crowned first in Stockholm and then in Trondheim. Having long enjoyed good physical and spiritual health, he suffered a stroke on his 81st birthday in 1844. Further complications ensued, and he died on 8 March at the Royal Palace of Stockholm.