Mag-Avril was born on 9 March 1899 in Marseille, Bouches-du-Rhône, France. She was an actress, known for Pêcheur d'Islande (1959), Le théâtre de la jeunesse (1960) and Don't Look Now... We're Being Shot At! (1966). She died on 4 November 1985 in Neuilly-sur-Seine, Hauts-de-Seine, France.