Notre-Dame l'Anglette
The space at the east and of the south choir aisle was put to use as a chapel soon after construction, as indicated by the piscina set into the outer wall. It was known as the Chapel of Notre-Dame Anglette (Beata Maria Anglice) perhaps derived from angulus, corner, or suggesting an English connection. Perhaps Eleanor of Castille was involved in the foundation.
The space was closed in with a screen and the community of chaplains kept their archive here.