During the winter famine of 1944 Constant's first son, Victor Nieuwenhuys, was born. After the war, Constant, his wife and son moved back to Bergen only to return to Amsterdam in 1946 where they lived in an apartment across from the zoo Artis. When the war ended Constant was able to expand and grow as an artist after years of captivity and limitations. He liberated himself artistically and experimented with multiple techniques of art-making. He was inspired by Cubism, especially by Georges Braque. In 1946 his daughter Martha was born, followed by his daughter Olga in 1948.