Nicolas Couppequesne, of the diocese of Rouen, referred to as master of arts in 1403, bachelor of theology, was rector, for the Chapter, of the great grammar schools of Rouen in 1417.

He became canon of the cathedral in 1423 in place of Jean d'Étampes who remained loyal to France, Couppequesne was curé of Hermanville and Saint Pierre d'Yvetot, and became pénitencier of the diocese in the vacancy of the archbishop's See.

He died intestate, on July 10, 1442

He was certainly an educated person and very agreeable to the English government, since, on June 5, 1430, when advised of the near approach of the King of England, the Chapter of Rouen decided that Nicolas Couppequesne should welcome the King in case Pierre Maurice were not able to do it.

A few months afterwards, when Bedford was received as canon, this worthy grammarian complimented the noble duke, and received for his pains a gallon of wine worth six shillings eight pence.

A short while before he was summoned to take part in the Trial, Nicolas Couppequesne published at the library of the Chapter a book entitled Lyrenensis Lugdunensis contra hereses (August 4, 1430).

In his judgment Nicolas Couppequesne invoked especially the authority of the University of Paris.