This volume contains a collective biography of those students of the medieval university of Erfurt (founded in 1392), for whom a study of the iura (canon and civil law) can be demonstrated. On the base of a prosopographical apparatus of more than 700 biographies (available on CD-ROM) their social antecedents, their courses of studies, their careers and professional activities are analyzed.The book tries to find statistically supported answers for questions, which have been discussed by German constitutional, legal and social historians for a long time; questions which can be summarized under the term “Verwissenschaftlichung” of governmental action in late medieval Germany.The volume also presents a contribution to the history of the medieval university of Erfurt from a prosopographical perspective.