Gustav Hintze's birth name is Gustav Hintze Holm.
Gustav Gavrin's birth name is Gustav Schwarz.
Gustav Jonsson's birth name is Gustav Robert Jonsson.
Gustav Mahncke's birth name is Gustav Theodor Mahncke.
Gustav Leonhardt's birth name is Gustav Maria Leonhardt.
Gustav Sandgren's birth name is Gustav Emil Sandgren.
Gustav Esmann's birth name is Gustav Frederik Esmann.
Jack Gustav's birth name is Gernot Gustav Fraydl.
Gustav Winckler's birth name is Gustav Frands Wilzeck Winckler.
Gustav Wiklund's birth name is Gustav Adolf Fingal Wiklund.
Gustav Knuth's birth name is Gustav Adolf Karl Friedrich Knuth.
Prins Gustav's birth name is Christian Frederik Vilhelm Valdemar Gustav.
Gustav Adolf Olsen's birth name is Olsen, Gustav Adolf.