Some remains of altars dedicated to Jupiter, of the time of Tiberius, which were found under the choir of the cathedral, and are now in the Palais des Thermes, seem to suggest that the Christian church was built upon the site of the Roman temple, or that the latter was converted into a church by the early Christians, as at Rome, Ravenna, and other places. The earliest authentic record of a Christian church in Paris is in the life of S. Marcel, where it is related that at the end of the 4th century one stood at the Eastern extremity of the island of the Cité. This is supposed to have been rebuilt by Childebert I. at the instance of S. Germain, for it is not probable that the building described by Fortunat, bishop of Poitiers, as rich in marble columns, glass windows, and magnificent ornaments, could have been the original edifice. Indeed, a discovery, made in 1847, seems to prove this. During some excavations which were made in the Place du Parvis it was found that some Roman houses had been demolished to make way for the foundations of Childebert's church; and, together with the Roman remains, were marble cubes which formed the pavement, three columns in Aquitaine marble, and a Corinthian capital in white marble. The Christians of the 5th century adhered in their church architecture to the style of building adopted by the Romans for their basilicas; in fact, in many cases the secular basilica was adapted to the purpose of Christian worship. Hence it is but probable that Childebert looked to Rome for the design of his church. These remains are in the museum and gardens of the Hôtel-Cluny. From the 6th to the 12th centuries there is no record of Notre-Dame, but Grégoire de Tours and d'Aymoin, towards the end of the 6th century, speak of two churches close together, but distinct from one another--the one, S. Étienne, to the south of the present church; the other, S. Marie, towards the north-east. A rather doubtful tradition attributes certain works of construction in the church to bishop Erchenrad I. during the reign of Charlemagne. But it is known that in 829 the celebrated Council of Paris was held in the nave of S. Étienne; and in 857 the other church, S. Marie, was burned by the Normans, the bishop, Énée, only being able to save the former church. In the 12th century, archdeacon Étienne de Garlande, who died in 1142, made some important restorations to Notre-Dame, and Suger, the great abbot of S. Denis, gave it a stained glass window of great beauty--probably similar to those in his own church. So, too, the early Capétien monarchs frequently visited this _nova ecclesia_ (as it was called to distinguish it from S. Étienne), and presented it with valuable ornaments.