Abstract: At the very beginning of the sixteenth century, Martin Dorpius and Adrien Barlandus, two humanist scholars at Louvain, staged antic comedies and tragedies with their students. On these occasions, they composed original prologues imitating those of their ancient models. This paper aims to analyze the way the introductory texts to the performances displayed various forms of authorship, from revered “auctoritas” to shared authorship.