 In 1417 the vaulting was painted by Jestin, 1424 saw the beginning of the nave's construction and on 26 July 1414 the first stone of the towers was laid.The episcopacy of Bishop Jean de Lespervez ran from 1451 to 1472 and in 1460 the nave was finished.In 1464 the vaulting of the side aisles of the nave was completed and in 1467 the south crossing of the transept was covered and the alignment of nave with choir was finished.