Henri Thiboust, priest of Coutances, was in T403 master of arts and medicine, and was pénitencier of Coutances and Bayeux, and rector of the church of Saint Pierre de Hambye in the diocese of Coutances.

He was master regent in medicine at Paris in 1414, at the same time as Guillaume de La Chambre, and was a colleague of Guillaume Desjardins in 14,8. In 1422 he was delegated by the University to go to the Council of Constance; in 1428 he obtained from Martin V the authority to teach medicine during his lifetime.

He was vice-dean in 1430 and in 1431 we see him designated as ambassador to carry the rolls to Rome, with Guérould Boissel, Thomas de Courcelles and Pierre de Gouda. He took part, in 1432, in the deliberation which decided to send ambassadors to the Duke of Burgundy. He was named dean on November 6, 1433.

In 1438 he was ambassador to the Council of Bourges; in 1439 he is cited as pénitencier and canon of Paris. Henri Thiboust is mentioned for the last time among the regents of the Faculty of Medicine in 1449.

He died in his house in the rue du Fouarre and his body was carried in state to Nôtre Dame.