During his years of service to Mlle de Guise, Charpentier also composed for "Mme de Guise", Louis XIV's first cousin. It was in large part owing to Mme de Guise's protection that the Guise musicians were permitted to perform Charpentier's chamber operas in defiance of the monopoly held by Jean Baptiste Lully. Most of the operas and "pastorales" in French, which date from 1684 to 1687, appear to have been commissioned by Mme de Guise for performance at court entertainments during the winter season; but Mlle de Guise doubtlessly included them in the entertainments she sponsored several times a week in her palatial Parisian residence.