Les campagnes du nord de l’Artois, autour des villes d’Aire et de Saint-Omer, sont conquises par les armées de Louis XIV en 1676 et 1677. Le déplacement de frontière qui en découle a d’abord des conséquences économiques, avec la coupure des anciens débouchés que fournissaient les Pays-Bas méridionaux. La région est profondément attachée à ses anciens souverains bourguignons sous lesquels elle jouissait d’une liberté tout autant politique qu’économique. Le rattachement au royaume de France se fait au prix dune lecture nouvelle de l’histoire. L’appropriation de l’espace se traduit d’abord par l’adaptation à l’environnement, mais aussi par la manière de le représenter, sous forme de cartes ou dans le récit des voyageurs, et par la toponymie. Sur le plan administratif, la période est également marquée par de profonds changements. Elle voit la genèse et le développement de l’administration moderne. La seigneurie se défait de ses atours féodaux pour devenir une structure économique la plus rentable possible. La vieille noblesse entre en concurrence avec une noblesse récente, de robe ou financière. Les officiers seigneuriaux au village, les gros laboureurs et les fermiers, qui sont généralement les plus gros propriétaires fonciers, occupent les places les plus importantes dans la gestion de la fabrique paroissiale, qui gère les finances locales. Ils dominent aussi la communauté d’habitants, institution qui apparaît comme moins importante que la fabrique, mais dont les procès-verbaux témoignent des rapports de force au village. / Northern Artois countries, near Aire and Saint-Omer, are subdued by Louis XIV armies in 1676 and 1677. The movement of the border had economic consequences with the stoppage of ancient southern Low Countries channels. The population are deeply attached to her old burgundian sovereigns under those they take advantage of political and economical liberties. The annexation to the kingdom of France is in the beginning of a new reading of the history. The appropriation of space is first interpreted by the adaptation to the environment, but also by the way to represent it, in the form of maps or in voyagers narrations, and by toponymy. The period is a like marked by administrative transformations, with genesis and development of modern administration. Seigniory leave its feudal clothes to became a profit-earning economic structure. Old nobility is in rivalry with the new legal or financial one. Seigniorial officers in the village got a real power, more especially as the lord and his agents usually don’t live on the spot. In the village, laboureurs and fermiers, that are among the most important ground-landlords, filled the principal posts in the administration of parochial fabrique, that ruled local resources. They also ruled the communauté d’habitants, institution that appeared as less important than the fabrique

En 1535, alors que le chantier de l'église paroissiale Notre-Dame des Marais de La Ferté-Bernard est privé de maître-maçon depuis deux ans et que la fabrique vient d'obtenir la promulgation d'indulgences, un nouveau maître-maçon est élu par les habitants fertois. Mathurin Delaborde est chartrain. Maître des maçons des ville et bailliage de Chartres, Mathurin Delaborde est alors le maître-maçon de la clôture de choeur de la cathédrale. A La Ferté-Bernard, l'édifice qu'il découvre est dans l'état suivant : nef, transept et tour-clocher sont achevés depuis plus de trente ans, tandis que le choeur est en cours de construction. Les chapelles nord sont élevées, ainsi que la chapelle axiale qui vient d'être pavée et vitrée. L'ensemble, de facture sobrement flamboyante, reste toutefois non voûté. Trente-quatre ans plus tard, en 1569, alors que la fabrique fait appel à un nouveau maître-maçon pour achever les arcs-boutants, l'édifice est quasiment achevé. Il porte le monogramme MdLB en deux endroits – dans le triforium et dans la tourelle d'escalier qui mène au garde-corps des parties hautes du choeur. Avec ses trois niveaux d'élévation, les voûtes plates de ses chapelles rayonnantes et surtout l'abondant décor sculpté « à l'antique » de ses parois intérieures et extérieures, le choeur de l'église Notre- Dame des Marais de La Ferté-Bernard est une véritable « fenêtre ouverte sur la Renaissance » / In 1535, the building of Notre-Dame des Marais the parish church of La Ferté-Bernard has been deprived of maître-maçon for two years and the fabrique has just obtained an indulgence enactment, when a new maître-maçon is elected by the people of La Ferté, Mathurin Delaborde from the city of Chartres. A city maître des maçons and bailiwick in Chartres, Mathurin Delaborde becomes the maître-maçon of the chancel screen of the cathedral. On his arrival in La Ferté-Bernard, the nave, transept and church tower have been built for over thirty years whereas the choir is in the middle of its construction. The northern chapels are built, as well as the axis chapel which has just been paid for and windowed. Although soberly flamboyant crafted, the structure remains unvaulted. Thirty four years later, in 1569, the structure is almost finished when the people of La Ferté call on a new maître-maçon to finish the flying buttresses. The building bears the MdLB monogram in two different places – on the triforium and on the staircase turret of the choir. With three levels elevation, the voûtes plates of the radiating chapels and especially the great amount of « à l'antique » decoration sculpted on its inner and outer walls, the choir of the church Notre-Dame des Marais in La Ferté-Bernard is a « window opened upon the Renaissance »

Since the beginning of the 21st century, the future of religious heritage has provoked consideration within the fields of law, history, architecture and heritage. The origin of this problem is explained both by the decline in traditional worship practices, essentially Catholic in France, from the 1960s onwards, and by the Church’s lack of human and financial resources, which has resulted in the appearance of veritable "religious desert". This process, related to society’s secularisation, is expected to increase because of the likelihood of these two factors intensifying. If convents, monasteries, seminaries and other Catholic religious buildings have already been affected by this phenomenon, parish church buildings are now in turn losing their original function. Quebec has also experienced this phenomenon, but its historical and legal contexts have accelerated the transformation of churches which in turn resulted in the establishment of a "churches Plan" aiming at preserving church buildings by converting them.In this thesis, that pioneering programme is used in relation to the Lyons Saint-Etienne urban area, as a lens through which to read the French situation and as a tool for generating methods adapted to its specific context.The first part summarises the specific heritage and legal knowledge bases from Quebec and France concerning their parish churches, which is necessary for understanding the two contexts. The second part is an observational study, which defines the territory and creates an inventory of the corpus of research. We first provide an inventory of 429 parish churches within the territory studied here. From an analysis of their transformations, we propose three major typologies ("historical", "19th-century" and "20 h-century " churches), Using the cases of church conversions in ou corpus, we analyse the degree of compatibility between their previous worship use and their new uses, and then formulate hypotheses relating architectural interventions for adaptative reuse to restoration theories. The third part is an action-research interventional study. Three representative case studies from each church typology have been selected, in the town of Montarcher, Givors and Villeurbanne. For each case, a participatory approach has been set up with the municipality, inhabitants and associations, in order to propose reconversion scenarios adapted to local needs.This work shows that the demolition of parish churches, widely perceived as a common good, threatens the transmission of local identities. It therefore seems essential to start a global reflection on the evolution of this heritage, one which takes into account territorial issues, citizens' demands and the architectural diversity of these buildings. We show that the architect, through both his sensitivity to the place and his technical, can play a central role in implementing of these reflection. / Since the beginning of the 21st century, the future of religious heritage has provoked consideration within the fields of law, history, architecture and heritage. The origin of this problem is explained both by the decline in traditional worship practices, essentially Catholic in France, from the 1960s onwards, and by the Church’s lack of human and financial resources, which has resulted in the appearance of veritable "religious desert". This process, related to society’s secularisation, is expected to increase because of the likelihood of these two factors intensifying. If convents, monasteries, seminaries and other Catholic religious buildings have already been affected by this phenomenon, parish church buildings are now in turn losing their original function. Quebec has also experienced this phenomenon, but its historical and legal contexts have accelerated the transformation of churches which in turn resulted in the establishment of a "churches Plan" aiming at preserving church buildings by converting them.In this thesis, that pioneering programme is used in relation to the Lyons Saint-Etienne urban area, as a lens through which to read the French situation and as a tool for generating methods adapted to its specific context.The first part summarises the specific heritage and legal knowledge bases from Quebec and France concerning their parish churches, which is necessary for understanding the two contexts. The second part is an observational study, which defines the territory and creates an inventory of the corpus of research. We first provide an inventory of 429 parish churches within the territory studied here. From an analysis of their transformations, we propose three major typologies ("historical", "19th-century" and "20 h-century " churches), Using the cases of church conversions in ou corpus, we analyse the degree of compatibility between their previous worship use and their new uses, and then formulate hypotheses relating architectural interventions for adaptative reuse to restoration theories. The third part is an action-research interventional study. Three representative case studies from each church typology have been selected, in the town of Montarcher, Givors and Villeurbanne. For each case, a participatory approach has been set up with the municipality, inhabitants and associations, in order to propose reconversion scenarios adapted to local needs.This work shows that the demolition of parish churches, widely perceived as a common good, threatens the transmission of local identities. It therefore seems essential to start a global reflection on the evolution of this heritage, one which takes into account territorial issues, citizens' demands and the architectural diversity of these buildings. We show that the architect, through both his sensitivity to the place and his technical, can play a central role in implementing of these reflection.