Whakakiia te rerenga e whai ake nei: I whanau a Gerzso i Mexico City, i nga wa o te
He hurihanga. Ko ona maatua ko Oscar Gerzso (), he manene Hungarian, me Dore Wendland, he Tiamana i whanau. I muri i te matenga o tona papa i etahi marama i muri i te whanautanga o Gunther, ka marenatia tona whaea ki tetahi kaihanga whakapaipai Tiamana. Na te raru ohaoha i te wa o te hurihanga i rere ai te whanau ki Uropi i te tau 1922. I hoki te whanau ki Mexico e rua tau i muri mai ka wehe tana whaea. I te mea kaore i taea e ia te tiaki i nga tamariki, ka tonoa e ia a Gunther ki Lugano, Switzerland ki te noho ki tona matua keke a Dr. Hans Wendland, he ingoa whai mana i roto i te ao toi. Ko Gunther, he taiohi, i tutaki ki a Paul Klee ka noho i waenga i nga kohinga peita a tona matua keke, tae atu ki nga mahi a Pierre Bonnard, Rembrandt, Paul Cézanne, Eugène Delacroix me Titian. I a ia e noho ana i Lugano, i tutaki ia ki a Nando Tamberlani, he kaihoahoa rongonui e whakaatu ana ia ki te ao o te whare tapere.