The fourth volume in this five-volume project marks a new departure. According to the concise summary which appears on the dust jacket, the final two volumes aim to ‘identify all the persons mentioned in any significant way in the previous three volumes’ of Pole's correspondence. The prosopographical approach adopted is clearly explained in the introduction, where readers are advised to acquaint themselves with the list of abbreviations necessary to decode the entries. The reader who does so will be rewarded with a rich mine of information. The present volume focuses to a high degree on those of the English clergy who had dealings with Pole. The introduction notes the ‘disproportionately large number’ of cathedral canons, explained by the fact that Pole made the cathedrals the centre of his restoration policy. The original intention of the editors to ‘work outward’ from the persons in Pole's correspondence to the networks of family and patronage sustaining them ‘did not get far’ but the claim to have begun the process and thus to have illustrated ‘the potential for future research’ is abundantly justified. The examples of certain high-profile people are indicated in the case of John Blaxton, ‘who played a central role in the diocese of Exeter for a quarter of a century and then became a key cog in recusant resistance in Hereford’. The entry on Blaxton is probably as good a point of departure as any. The reader, once engaged, will find that this volume fully justifies the claims made for it by the editors. A list of errata and addenda for volumes i–iii is to be found on pp. 613–21.