A volume containing an English-Welsh dictionary, c. beginning 18th century. Three englynion by John Rhydderch (1673-1735) are included at the end of the volume (p. 172). It is clear that John Rhydderch made use of this manuscript when compiling his own English-Welsh dictionary (Shrewsbury, 1725), in the preface of which he refers to three manuscript dictionaries, one of which was compiled by the Reverend Erasmus Lewis, vicar of Lampeter; it is therefore possible that NLW MS 321E was written by Erasmus Lewis.