Gustavus IV., king of Sweden from 1792 to 1809, son of preceding; his incompetency and stubbornness made him an ill ruler; territory was lost to the French, and Finland to Russia, while an attack on Norway proved a failure; popular indignation rose to a height in 1809; he was deposed, and the crown given to his uncle, Charles XIII.; after this he lived on the Continent (1778‒1837).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Gustavus III. * Gutenburg, Johannes