Kammala jumla mai zuwa: Gerzso an haife shi ne a Mexico City, a zamanin
Juyin juya hali. Iyayensa Oscar Gerzso (), wani baƙon Hungary, da Dore Wendland, Jamusawa ta haihuwa. Bayan mutuwar mahaifinsa 'yan watanni bayan an haifi Gunther, mahaifiyarsa ta auri wani mai kayan ado na Jamus. Matsalar tattalin arziki a lokacin juyin juya hali ya sa iyalin suka gudu zuwa Turai a 1922. Iyalin sun koma Mexico bayan shekaru biyu kuma mahaifiyarta ta sake aure. Ba tare da samun damar ciyar da yaran ba, ta aika Gunther zuwa Lugano, Switzerland don zama tare da kawunsa Dr. Hans Wendland, wanda ya kasance suna mai tasiri a duniyar fasaha. Gunther, sa'an nan kuma matashi, ya sadu da Paul Klee kuma ya zauna a cikin tarin kayan aikin kawunsa wanda ya hada da ayyukan Pierre Bonnard, Rembrandt, Paul Cézanne, Eugène Delacroix da Titian. A lokacin da yake a Lugano, ya kuma sadu da Nando Tamberlani, sanannen mai tsara zane wanda zai gabatar da shi ga duniyar wasan kwaikwayo.