This third volume by André Gouron brings together a widely scattered set of articles on Roman law in medieval France and its influence. The first group of papers is concerned with the medieval history of Roman law itself, while the two following sections look at how it contributed to the (perfectionnement) of canon law, on the one hand, and to the emergence of customary law on the other. As the author would see it, there are the three aspects of the inexorable advance, if not of a science, at least of a clear effort towards logical clarification, which revolutionised law in the 12th and 13th centuries, first in southern Europe, but soon in the west and north too. At the same time, these studies help reveal some of the complex network of intellectual links that underlay these developments.