Guillaume de Baudribosc, originally of Rouen, was master of arts and bachelor of theology in 1403, and canon of the cathedral of Rouen in 1431.

He was keeper of the seal of the church court in 1422, and was in charge of the archives of the Chapter.
He was pénitencier of the Chapter in 1424, and took the inventory of goods of the church houses, with the chancellor, Gilles Deschamps, in 1425. He was exempted by his confrères from coming to church, in 1439, because of his age and infirmities.

He died about the fifteenth of January, 1447, in his house in the rue aux Oues. We may assume that Baudribosc was educated, for he willed three books to the library of the cathedral; he was eloquent, for he was appointed by the Chapter to felicitate the Duke of Bedford upon the occasion of his joyous entry into Rouen in 1424, and to ask justice from him-in very generous terms. But he was certainly very strongly attached to the English party. His niece, who was his heiress, was married to an Englishman.

Guillaume de Baudribosc, a very diligent judge at the Trial, hid behind the authority of the Abbot of Fécamp, when he had to make his decision.