 The stained glass window and paintings in this chapel celebrate the life and martyrdom of Saint-Frédéric (Frédéric d'Utrecht).Saint-Frédéric had originally come from Utrecht and had served as the Bishop of Walcheren in the time of Louis le Débonnaire.The chapel has a fine altar combining marble and gilded bronze and on the sides of the altar are statues depicting Saint Mathurin and Saint Frédéric, the latter holding an open book and pointing to the page opened.