The episcopal churches also owned claustral buildings for the accommodation of the cathedral clergy who lived together in communities according to the ancient usage which obtained down to the fifteenth century. The Cathedrals of Aix, Arles, and Cavaillon, in Provence, of Elne, in Roussillon, of Puy, in Velay, of St. Bertrand, in Comminges, still preserve their cloisters of the twelfth century. The Abbey of La Chaise Dieu, in Auvergne, founded in the eleventh century, was one of the monastic schools which rose to great importance, mainly through the talents of its monkish architect and sculptor, Guinamaud, who established its reputation as an art centre. By the close of the twelfth century La Chaise Dieu was turning out proficients in sculpture, painting, and goldsmith's work. The buildings of La Chaise Dieu were reconstructed in the thirteenth and fourteenth centuries. The order of preaching friars, founded by St. Dominic in the early part of the thirteenth century, is noted rather for its intellectual than for its architectural achievements; the fame of the Dominicans rests upon their preaching and writings, not upon the number or magnificence of their monasteries. About the same period St. Francis of Assisi founded the order of minor friars, who professed absolute poverty--a profession which, however, did not prevent their becoming richer at last than their forerunners. These two orders--preaching and mendicant friars, apparently formed in protest against the supremacy of the Benedictines--were strongly supported by St. Louis, who also protected other orders, such as the Augustinians and Carmelites, by way of balancing the power of the Clunisians and Cistercians. [Illustration: 144. ABBEY OF LA CHAISE DIEU (AUVERGNE). CLOISTERS] To the preaching friars St. Louis granted the site of the Church of St. Jacques, in the Rue St. Jacques, Paris--whence the name _Jacobin_ as applied to monks of the Dominican order,--and here they built in 1221 the Jacobin monastery, the church of which, like those of Agen and Toulouse, has the double nave peculiar to the churches of the preaching friars. From the thirteenth century onwards the arrangement of the abbeys diverges more and more from the Benedictine system in the direction of secular models. The daily life of the abbots had come to differ but little from that of the laymen of their time, and as a natural consequence, monastic architecture lost its distinguishing characteristics.