The purpose of this volume is to make available sources for the study of the church in London during the last quarter of the fourteenth century. it contains three distinct groups of material. The first consists of six documents (1-395) concerned with the clerical taxes of the years 1379-81 (Public Record Office E179 Clerical Subsidies). The second is an assessment of ecclesiastical property in the city of London in 1392 (396-456, Corporation of London Records Office). The third consists of the acta of William Courtenay, bishop of London 1375-81 (547-652), collected from a variety of sources. The aim in gathering these acta has been to try to fill, in part, the gap left by the loss of his register. In furtherance of this aim the registers of contemporary bishops, the cartularies of religious houses in the diocese, and certain classes of Public Records have been examined. Some documents yielded by this investigation are in London repositories but the majority are to be found in local record offices from Durham to Exeter, and from Hereford to Norwich.