Guillaume de Conti, Benedictine, was provost of Cérisy, and abbot of Saint Pierre de Lagny in 1423, and abbot of Sainte Catherine du Mont at Rouen in 1429.

Licentiate in law in 1422, he was a University delegate to the Council in 1423; master of arts in 1424, he taught at Paris after that time. He was dean of the Faculty of Law from November, 1431, until May, 1432, when he left to attend the Council of Bâle. In 1434, the University delegated him, with Thomas de Courcelles, to go to Arras to treat for peace.

In 1436, in April, he was designated as ambassador of the University to congratulate Charles VII on the occasion of the taking of Paris. Guillaume de Conti died in 145:z, after swearing allegiance to Charles VII.