n 1: the last king of Sweden to have any real political power (1882-1973) [syn: Gustavus, Gustavus VI] 2: king of Sweden who kept Sweden neutral during both World War I and II (1858-1950) [syn: Gustavus, Gustavus V] 3: king of Sweden whose losses to Napoleon I led to his being deposed in 1809 (1778-1837) [syn: Gustavus, Gustavus IV] 4: king of Sweden who increased the royal power and waged an unpopular war against Russia (1746-1792) [syn: Gustavus, Gustavus III] 5: king of Sweden whose victories in battle made Sweden a European power; his domestic reforms made Sweden a modern state; in 1630 he intervened on the Protestant side of the Thirty Years' War and was killed in the battle of Lutzen (1594-1632) [syn: Gustavus, Gustavus II, Gustavus Adolphus] 6: king of Sweden who established Lutheranism as the state religion (1496-1560) [syn: Gustavus, Gustavus I]