Brought up in Paris, he used to go to the Louvre Museum every Thursday where he found his favourite masters: Ucello, Mantegna, Ghirlandaio, Hieronymus Bosch, Botticelli, Titian, Claude Lorrain, Poussin, Ingres, Delacroix, Courbet, and then the Moderns, in particular, Kandinsky.
Guy de Montlaur studied philosophy at the Sorbonne University and painting at the Académie Julian. Early every morning, he mounted racehorses with the jockeys at Maison Laffite.