Book excerpt: The articles in this book, reprinted from the journal Past and Present, are all, in different ways, concerned with the ownership of landed property in medieval England and with those who worked the land. Problems debated include those concerning the keeping intact of the great estates of the Anglo-Norman barons in the face of both inheritance claims and of political manipulation by the crown. Other articles show that the difficulties of knights and lesser gentry were no less complex, as social shifts resulted from economic developments as well as from their military role and their relationships with their overlords. The essays are of as much importance for those interested in the history of politics as to those concerned with the economy and society of medieval England.