The beautiful maps of medieval Paris suggest that the city comprised a uniform whole: a homogeneous space adorned by streets, churches, colleges and palaces. Much of the information that is required to understand everyday life in the city, such as marketplaces, estates, parish churches or the distribution of commercial activities, however, remains hidden. A recently published atlas compensates for the scarcity of such information with numerous maps offering a better insight into the urban space of Paris. However, as it does not address the question of lived space, the individual maps are rarely compared and the collection does not go beyond thematically sorting city-level phenomena. The analyses of Parisian society provide descriptions of social layers, which categorise the population, but fail to relate the categories to the whole of the urban society. Examining the spatial dimension of networks can be a transitional solution for this problem. It is a relatively novel approach in the research of Parisian life as little has been done besides researching urban work and neighbourhood. Thus far few historians of lived spaces have turned their attention to the level of the individual. This raised the idea in a History of Paris seminar that each participant would focus on real lived spaces of medieval Parisians by examining the spatial dimensions of social relations in the different sources they specialise in. Naturally, this kind of empirical juxtaposition is not the ultimate solution for this question, however, it is expected to make a few initial steps in this emerging field. The study in its original form was published in the 2007–08 issue of the Bulletin de la Société de l’Histoire de Paris et de l’Ile-de-France. Due to limited space, this present publication contains three of the five sections and summaries of the two omitted case studies. The written version was the result of a workshop conference on 19 May 2006, which was organised by Boris Bove within the framework of the History of Paris seminars held in connection with the IRHT (Institut de Recherche de l’Histoire des Textes, CNRS) and the LAMOP (Laboratoire de Médiévistique Occidentale, Université Sorbonne-Paris 1). The seminar launched in 1998 for researchers of the History of Paris to offer thematic lecture series focusing on broad concepts. In 2005–06, the theme of the seminar was relationships, networks and solidarity in the French capital.