Who was Charles XIV John, also known as Charles III John?

Question

In 1713 Charles XII, King of Sweden, created what position to ensure that public officials acted in accordance with the law and discharged their duties satisfactorily, and could initiate legal proceedings against them for dereliction of duty?

Answer 1

King of Sweden and Norway
In 1810 Jean Bernadotte, a member by marriage of Napoléon Bonaparte's family and a Marshal of the new French Empire, was elected heir to Sweden's childless King Charles XII. In 1814 the now Crown Prince added Norway to Sweden's rule. He ruled the two countries from 1818 until his death in 1844. In the list of Swedish kings he is Charles XIV John, in that for Norwegian kings he is King Charles III John.