André Marguerie, master of arts in 1403 at Paris, bachelor of law, was vicar-general and counselor of Archbishop Louis d'Harcourt in 1409, and was confirmed as archdeacon of Petit Caux by Henry V in 1421.

He returned at that time from the Council of Constance, and affirmed that he had never adhered to the Armagnac party or that of the Dauphin. A member of the council of the King during the English domination, he is cited as counselor of the King in 1422 and received 30 livres "to make a certain trip from Rouen to Vernon, on behalf of the said lord," (Bedford). He went as a deputy to the Estates of Normandy in 1423, to the provincial council at Rouen in 1445, was holder of the benefice of Drosay, and at the same time was treasurer of the Chapter of Rouen, and undertook the pilgrimage to Jerusalem between 1442 and 1443, and asked, to this end, testimonial letters de vita et moribus.

André Marguerie died at Rouen February 12, 1465. His will shows that he was rich and beneficent. André Marguerie's conduct at the Trial was prudent and he even at times let himself appear kindly disposed. He testified in a rather vague way at the Rehabilitation.