Jean de Troyes, called Halbould, of the Mathurin order, was vice-dean of the Faculty of Theology in 1431.

Licentiate in theology in 1403, master in 1416, he gave his adherence to the condemnation of the propositions of Jean Petit. He was minister-general of the Order (Gallia, viii).

In 1418 he went to the Duke of Bedford at Rouen. He was regent of the Faculty of Theology from 1421 on; he took part in the condemnation of the doctrines of Brother Jean Sarrasin (March 30, 1430). October, 1432, he is described as vice-dean of the Faculty when the University addressed an embassy to the Duke of Burgundy.
The last mention of him that we can find is in 1438.