A good way of getting to know the legacy of St. Louis is to visit his chapel in Paris, full as it is of stained glass of the 13th century. On a bright day as we experienced two years ago, Saint Chapelle is glorious and one is reminded, as in the Chronicles of the Crusades by de Joinville that he was a truly loved and devout man who has become a saint. His feast day is on 25 August, the very day by chance, we visited the chapel which acts as his shrine. The glass glorifies the Crown of Thorns and the True Cross which St. Louis had purchased — although the chronicles indicate that the King of Constantinople gave them — from the Holy Land and which were placed in a reliquary. On this disc the sequence Regis et Pontificis (tr. 22) celebrates the event.