The file comprises letters to and from J. L. C. Cecil-Williams (Honourary Secretary of the Society) relating to the erection of a memorial plaque to Dafydd ap Gwilym at Strata Florida Abbey, and the unveiling ceremony, 7 July 1951.
Dafydd ap Gwilym sexcentenary exhibition
A typescript list of manuscripts displayed at the Dafydd ap Gwilym sexcentenary exhibition, giving details of each item and the source or location. The list also includes a brief outline of the life and work of Dafydd ap Gwilym. A separate typescript list, with MS addenda, gives details of items from the Cymmrodorion MSS and MSS of the Welsh School.