The actual existence of a library in the Cathedral, may be traced back as far as the year 1424. The canons, caused to be erected, for that purpose, over the cellar of the chapter house, the large building which we see at present. It was about one hundred feet long by twenty five broad. They ascended to it by a handsome gothic staircase, erected by order of the cardinal William d'Estouteville, during the second half of the XVth century, and placed in the corner of the northern transept. This library was plundered and destroyed by the calvinists, in 1562, but, was restored by the archbishop Francis de Harley. In 1788, the chapter ordered an additional story to be built over the library, destined to receive the records of the church. The higher portion of the staircase which conducts to this story, was erected in 1789, and in the same style as the rest of it. As far as 1112 the cathedral possessed several manuscripts, which were destroyed in the fire of 1200. A great portion of the books of the cathedral are now deposited in the public library at the town-hall. There are twenty five chapels in the circumference of the Cathedral. The most spacious, and the first to the right on entering, is that of Saint-Stephen, _la grande eglise_. It was formerly the _Parish church_ of Notre-Dame. At the extremity of this aisle of the nave in going up, is the chapel of _petit Saint-Romain_, where the tomb of Rollo, the first duke is situated. This prince had formerly been buried in the sanctuary, near the great altar, which, at the time, was situated at the higher end of the present nave. The altar having been removed farther back, the remains of Rollo were deposited in the corner arcade where they now are. Above the arcade is the following inscription on a table of black marble, of which the following is a translation. Here lies Rollo, the first duke, the founder and father of Normandy, of which he was at first the terror and the scourge, but afterwards the restorer. Baptised in 912 by Francon, archbishop of Rouen, and died in 917[5]. His remains had formerly been deposited in the ancient sanctuary, where is at present the upper end of the nave. The altar having been removed to another place, the remains of the prince were deposited here, by the blessed Maurille, archbishop of Rouen, in the year 1063. On the opposite aisle, and exactly opposite the chapel we hare just left, is that of Saint-Anne. The remains of Guillaume-Longue-Epée, the son and successor of Rollo, who was assassinated in an island of the Somme, by order of Arnould, count of Flanders, are deposited in this chapel. His remains are placed like those of his father, in an arched corner, above which, is the following inscription, which we translate thus.