I frst became interested in William Dyngley in 2011 while working on the second Cambridge fascicle of An Index of Images from the Time of Chaucer to Henry VIII. What caught my eye was a catchword design used by his primary scribe. None of the twelve manuscripts bore Dyngley's name, but all were inscribed in the Peterhouse Registrum vetus as his donations to the college. Until recently Dyngley has been little known. In 1896 M. R. James frst drew attention to him in a short entry in Proceedings of the Antiquarian Society citing ‘One group of books – a set of works by SS. Augustine, Ambrose and Jerome, given by a certain William Dyngeby [sic]’ which have ‘notices of the money spent in producing the book. These notices are uniform and the items have some interest.’ The specifc detail was entered in his ensuing Descriptive Catalogue of the Manuscripts in the Library of Peterhouse. In 1936 H. E. Bell praised Dyngley's notices as ‘the most satisfactory records of the cost of production’ he had discovered, and in 2008 J. F. Overty published the itemised lists from five of Dyngley's manuscripts. Neither cited him by name. Virginia Davis in a paper presented at the 1999 Harlaxton Conference included Dyngley in her survey of university-educated secular clerics.