Open English Wordnet
Nouns
(n)Gustaf VI Adolf of Sweden, Gustavus, Gustavus VIthe last king of Sweden to have any real political power (1882-1973)
(n)Gustaf V of Sweden, Gustavus, Gustavus Vking of Sweden who kept Sweden neutral during both World War I and II (1858-1950)
(n)Gustav IV Adolf of Sweden, Gustavus, Gustavus IVking of Sweden whose losses to Napoleon I led to his being deposed in 1809 (1778-1837)
(n)Gustav III of Sweden, Gustavus, Gustavus IIIking of Sweden who increased the royal power and waged an unpopular war against Russia (1746-1792)
(n)Gustavus Adolphus of Sweden, Gustavus, Gustavus II, Gustavus Adolphusking 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)
(n)Gustav I of Sweden, Gustavus, Gustavus Iking of Sweden who established Lutheranism as the state religion (1496-1560)