Nicolas Lemire, Medici, is referred to in the Trial Record both as bachelor of theology, and as master.

Denifle and Chatelain have proposed the correction from Nicolaus to Petrus.
We find at the University of Paris a Petrus Medici, cleric of Evreux, master of arts in 1403, licentiate in theology in 1428, master in the same year.

This priest of the diocese of Evreux was desirous of obtaining a vicariate, in 1425, in the Evreux church.
But it is wise to be prudent in such corrections, and we must admit that Thomas de Courcelles must have known his colleagues rather well.