Gustav Adolf Olsen's birth name is Olsen, Gustav Adolf.
Gustav Wiklund's birth name is Gustav Adolf Fingal Wiklund.
Gustav Knuth's birth name is Gustav Adolf Karl Friedrich Knuth.
Gustav Ranft's birth name is Gustaf Adolf Ranft.
Gustav von Wangenheim's birth name is Ingo Clemens Gustav Adolf Freiherr von Wangenheim.
Gustl Bayrhammer's birth name is Adolf Gustav Rupprecht Maximilian Bayrhammer.
Gustav Gavrin's birth name is Gustav Schwarz.
Gustav Sandgren's birth name is Gustav Emil Sandgren.
Gustav Mahncke's birth name is Gustav Theodor Mahncke.
Gustav Leonhardt's birth name is Gustav Maria Leonhardt.
Gustav Jonsson's birth name is Gustav Robert Jonsson.
Gustav Esmann's birth name is Gustav Frederik Esmann.
Jack Gustav's birth name is Gernot Gustav Fraydl.