 This joining of the chapel to the cathedral choir meant that it needed some reconstruction including vaulting and some elegant columns (Colonnettes), and enlargement of the ambulatory and an arcade where the chapel joined the choir.The altar is of granite and was consecrated by Monseigneur Alain Rivelen in 1295.The chapel holds the tombs of Bishop Even de la Forêt who died in 1290 and Bishop Gatien de Monceaux who died in 1416.