Of all the institutions that grew up in the medieval church none has received so little attention from English scholars as the chantries. That they played an important part in the religious life of this country before the Reformation is indeed generally recognised; but our historians have done little more than to indicate the purposes for which chantries were founded, and to point out that their numbers increased greatly towards the end of the Middle Ages. In the present essay an attempt is made to render our knowledge of the chantries less vague by discussing at length some of the more important problems of their history, giving a detailed account of them during a single half century. For this purpose the reign of Edward III has been chosen, partly because its close is practically contemporaneous with our most important literary references to the chantries, those of Chaucer and Langland, but mainly because, since the Black Death occurred within a few years of the middle of this period, it affords an opportunity of studying the effects of the pestilence on this phase of English life.