Gonzalez knew Torres García (and almost certainly Picasso) from Els Quatre Gats in Barcelona. Gargallo, Gris, Modigliani and Jacob became friends in Montmartre. He got to know Brancusi soon after the Romanian arrived in Paris, and later worked for him, making up his armatures. This led to his old friend Picasso asking for his help with metal sculptures, Gonzalez working alongside him for 3 years and teaching him to weld (which he himself learned working for Renault). Hartung married his daughter. Varèse took his friend González to meet his beloved grandfather, González using garlic juice to fix his drawing of him.