Du Quesnay, de Quesneio, given as Maurice Duchesne, de Quercu, in the French Minutes of the Trial.

We find a Jean de Quesneio, cursor in theology in 1426, at the same time as Guillaume Erard, licentiate in theology in 1429. He is said to be master of theology on March 30, 1430, and sat at the trial of Friar Minor Jean Sarrasin beside Jean Beaupère Martin Billorin, Guillaume Erard, all judges of the Maid, and he is often mentioned in the petitions of the Vatican.

In the month of September, 1430, he figures among the master regents of the University of Paris. We find him later as abbot of Bec-Hellouin, and canon of La Saussaye in the diocese of Evreux, and then, in 1434, among the members of the Council of Bâle. But, if this is the Du Quesnay in question, it does not explain the name Maurice which is given him in the French minutes, or the form de Quercu, for his surname.