When the Nazis came to power in Germany, Leopold Grumbacher’s father, who was a storekeeper, decided to leave Germany, and settle in Switzerland. Leopold wished to study painting and went to Paris where he lived for five years. He used pastels and never went anywhere without carrying his sketchbook in his pocket. In 1939, he was stationed in the Bellac forest in the Haute-Vienne department.

In 1942, Leopold Grumbacher was interned in the Mérignac camp in Bordeaux. He made friends with the other prisoners in the camp. A few months later, following a hunger strike, he was transferred to Saint-Georges-d’Aurac. In September, he was transferred again to Bessiere-Sainte-Marie, to Brive and then to Montluçon. On September 13, 1942, Leopold Grumbacher was deported from Drancy on convoy number 32. He did not survive hard labor and died of exhaustion.