Corneille (Corneille Guillaume Beverloo ) starts to study art in Amsterdam in 1940 and attends studies from time to time here he among others meets Appel.
During the war, he gets fascinated by Matisse and Picasso but after the war he is more impressed by The French School, among others Pignon.

Corneille had his first exhibition in 1946, he spent some months in Hungary, in Budapest he visited a library and "discovered" the surrealism, and at the same time he got some inspiration from Miro and Klee.

Corneille was best known for radicalizing the conservative Dutch art world in the early 1950s, making modern art not only acceptable but embraceable as well. He placed familiar subjects — birds, cats, women, and landscapes in mythological and often childlike contexts, imbuing them with spontaneity and bright, sensual reds.