Late medieval Sentences principia, the formal disputations future masters of theology had to give when beginning their lectures on a new book of the Lombard, were accompanied by a solemn act of thanksgiving. These so called gratiarum actiones of students thanking both their real and intellectual masters, are noteworthy in two regards: on the one hand, they are telling about the status of university masters and students, and of the relationship between them; on the other, they give evidence of the broader intellectual network a student was (or tried to be) involved in. The paper analyzes three Parisian gratiarum actiones from the first decades of the 15 th century (by Gilles Charlier, Lambertus de Monte, and William of Vaurouillon), showing how these students tried to present themselves both as masters, and as members of well distinguished, but not polemically separated intellectual traditions.