gustavus i(n = noun.person) gustavus - king of Sweden who established Lutheranism as the state religion (1496-1560);
is a kind of king, male monarch, rex

alexander i, angiotensin i, antonio gaudi i cornet, artaxerxes i, bosna i hercegovina, catherine i, charles i, claudius i, clovis i, constantine i, czar alexander i, czar nicholas i, czar peter i, darius i, demetrius i, edmund i, edward i, elizabeth i, ethelred i, factor i, farouk i, faruk i, ferdinand i, francis joseph i, franz josef i, frederick i, frederick william i, gaudi i cornet, george i, gravida i, gregory i, gustavus, gustavus adolphus, gustavus franklin swift, gustavus ii, gustavus iii, gustavus iv, gustavus v, gustavus vi, harold i, henry i, i, i chronicles, i corinthians, i esdra, i john, i kings, i maccabees, i o u, i peter, i samuel, i thessalonians, i timothy, isabella i, james i, jeroboam i, john paul i, jomada i, jumada i, justinian i, kamehameha i, king harold i, king james i, leo i, letter i, louis i, mary i, napoleon i, nicholas i, osman i, othman i, otho i, otto i, para i, peter i, phase i, phase i clinical trial, ptolemy i, rabi i, richard i, robert i, saint gregory i, salt i, samoa i sisifo, seleucus i, seleucus i nicator, st. gregory i, st. leo i, theodosius i, type i allergic reaction, type i diabetes, vatican i, william i, world war i, xerxes i