This study of the social, geographical and disciplinary composition of the scholarly community at the University of Paris in the early fourteenth century is based on the reconstruction of a remarkable document: the financial record of tax levied on university members in the academic year 1329-1330. Containing the names, financial level and often addresses of the majority of the masters and most prominent students, it is the single richest source for the social history of a medieval university before the late fourteenth century. After a thorough examination of the financial account, the history of such collections, and the case (a rape by a student) that precipitated legal expenses and the need for a collection, the book explores residential patterns, the relationship of students, masters and tutors, social class and levels of wealth, interaction with the royal court and the geographical background of university scholars.