A letter, 29 January 1833, from the Rev. Robert Williams, Aberconwy (later of Rhydycroesau), to Davies Gilbert, former President of the Royal Society, discussing the Cornish language. The writer includes a transcript of the first page of his manuscript Cornish dictionary, later to be published as Lexicon Cornu-Britannicum (London, 1865).
A reference to the posting of this letter on 4 February appears in Williams's diary, now Cwrtmawr MS 330B; a portion of the dictionary in Williams's hand, partly dated 1835, is now Cwrtmawr MS 399C; and a printed prospectus for the dictionary, 1838, is now NLW MS 21881C, ff. 89-90.