More than 800 hoards of medieval precious metal coins are known from England and Wales, but the phenomenon as a whole remains poorly understood: who made coin hoards, what did they put in them, how did they assemble them, where did they bury them, and, ultimately, why did they do it? This book provides a pioneering analysis of the archaeological and numismatic evidence for coin hoarding in medieval England and Wales, using innovative multivariate and spatial techniques to shed fresh light on the behaviours, motivations, and mentalités behind the formation and deposition of coin hoards during in the period c.973-1544. It is accompanied by a digital gazetteer describing the 815 hoards used in the study, the largest and most comprehensive corpus ever assembled for this region and period.